2) Copper is used in practical engineering, but it is not envied for its beauty.
3) Every research progress of micro-technology provides scientists with a brand-new perspective to look at the function and essence of biology itself.
4) The establishment of these post stations has opened up new roads, provided protection for brave adventurers and explorers, and established settlements.
5) Now who will let those who may live far away from the center of the old city and commute have work, shopping and entertainment?
6) These buildings are usually placed on cliffs, which are easy to build and resist the enemy.
7) In Core Sun Company, the pressure is so great that there may be a small solid core despite the high temperature.
8), but in the late19th century, it was not a single newspaper that brought new knowledge to the American people.
9) However, in fact, they have very different plants. Today, they are put in a separate group.
10) She also left her photos on the websites of different architectural design studios, allowing cameras, lights, mirrors and crew assistants to turn their websites into abstract images.
1 1) The list of colonial libraries shows that the number of builders of these manuals is amazing.
On average, people have about seven thoughts in their minds at any time.
13) There is no further attempt to formally organize more and more watercolor painters in new york 10 years.
In addition to their wear resistance, beads also have ideal characteristics suitable for each series: they are durable, portable and varied.
15) If you carefully study some early versions of the Declaration of Independence, besides the flourishing signatures signed by john hancock and 55 other men, you will also find a woman's name, Mary Catherine Goddard.
16) pressure gas must act on the body as the external pressure when inhaled, otherwise it is very difficult to breathe.
17) political speeches, which are delivered by tourism politicians and last for112 to 2 hours, have given way to 30-second advertisements and 10 second "voice bites" to broadcast news.
18)30 years of great depression war and remarriage, 1945 began the process of catching up.
19) Women produced cloth, clothes and shoes throughout the colony.
Science involves imagination and creative thinking, as well as collecting data and conducting experiments.
2 1) Not only do farm residents find it more difficult to find a companion, but also because of endless demand and intense work, they think it is necessary to combine fun purposes.
22) The Bird's Nest is a deep cup, made of clay, which can ensure the safety of eggs, while shallow cups will scratch other seagulls.
23) It is widely publicized that foods grown with organic fertilizers can prevent or treat diseases or have other health benefits.
24) Her first novel, In a Cold Autumn (1964), described a racing car in stock, but she had never seen a race.
25) Finally, in 1863, the US Congress stipulated that the mail provided by mail operators, from the post office to the private address, should be paid by the government, and no extra fees should be paid.
26) The document described in the experiment was submitted to the Paris Academy of Sciences in 1894.
Sometimes soil and transportation machinery are destroyed in floods.
28) 1776 When the War of Independence broke out, the angry and determined Byrd prepared to use the Continental Army to make cannons and shoot1712-1716.
29) Is it possible that most migratory birds start flying at night?
30) All the leaders finally pardoned President Johnson at 1868 and tried to help the reconstruction efforts with less pain.
The increasing demand of urban population urges fruit farmers and vegetable farmers to increase their output.
32) In the existence of community banks, banks are a reliable way to store a lot of time.
33) In such a serious expression period, any other colonists "do something useful in their leisure time", so farmers in rural areas have reduced the burden of relaxing for daily dual purposes, such as hunting, fishing and trapping.
34) The adaptability of desert to mammals is usually extremely dehydrated during further feeding: this is a similar experience, and people's appetite will lose their thirst even under mild conditions.
35), but in the west of arid pasture, this familiar blue joint base is often caused by drought.
36) The bottom of the deep sea is a hostile environment for human beings, and in some ways it is as forbidden and distant as invalid outer space.
Fortunately, scientific and technological progress has overcome most of these problems.
38) Tradition is paramount, with little change. Take your time.
39) Wear beads change the surface features of daily wear. If buried for a long time, corrosion will further change their appearance.
40) By 1800, a complete building with internal iron skeleton had been developed, which replaced the traditional wooden beam in industrial structure, but it was still covered up as a whole.
4 1) Gradually, the economic reality overcame the ideology. Thousands of abandoned cities are in danger of living on farms, where there are safer and better high-paying jobs.
42) In the corresponding extra food bank, Mandan protects himself from catastrophic crop failure and corresponding hunger.
43) These activities usually include horse racing, wrestling and hiking, as well as some non-sports activities, such as whistling competitions.
44) Continuing their journey in the spring of 1805, these people worked along Missouri and then passed through the western mountains of Montana and Idaho.
45) When Verne wrote The Journey to the West in 1864, there were many contradictory theories about the nature of the earth.
46) No matter how harsh it is, there is no dispersion of the population in the New World, and there is no objection to the clergy discouraging most people from pursuing happiness.
47) Most women work in their own homes, and their labor produces the most needed items in the family.
48) When two continental plates collide, the lighter continental blocks can be extracted and continue to float, thus forming long marginal plates along the mountains.
49) The tropical rain forest with the highest species diversity in the ecosystem has been rapidly destroyed, awakening people's importance and vulnerability.
However, some people say that children nowadays interrupt their studies to go to school.
5 1) The concept that an artist can or will destroy an idea in a suitable spontaneous inspiration is completely unfamiliar to these intentional production projects.
Unfortunately, with the improvement of industrialization, we are getting farther and farther away from the factory.
53) In order to help cope with this difficulty, film distribution companies began to release suggested music accompaniment.
54) When disturbed, anemones contract their tentacles and shorten their structure, making them look like a rock every time.
55) The middle class, especially men, participate in the productive economy, while women stay at home and are excluded from the guardians of civilization and culture.
Considering this point, there are usually two reasons: advanced and slow development, that is, practical mental difficulties and difficulties encountered.
57) Both farmers and western businessmen are completely satisfied with this trade model.
58) As the metal flows or "solidifies" at a specific temperature, the temperature at which the glass gradually softens increases.
59), their work is divided. Ha methodically selects and cultivates some soil samples, and then sends them to her partners, who will extract these samples and transport them back to new york, where Ha can study their biological characteristics.
60) Mineral particles found in soil range from microscopic clay particles to large stones.
6 1) is perhaps the most obvious way for artistic creation to reflect how people live. It reflects the materials and technologies provided by the environment to culture.
62) The tools used by these people are more or less owned by people with wood: carpenters, cooperage, shipbuilders.
But the amount of helium may be produced in this way, and it can be calculated that the original amount is not more than a few percent.
64) Science is based on facts, just like a house made of bricks, but collecting facts cannot be called science. Everything can be called a house except a pile of bricks.
65) Motor
Although the pollutants of personal motor vehicles have decreased in recent years, the number of diesel engine vehicles has been increasing.
nail
68) Some nails, artificial hands, but no screws or glue.
69) His servant nailed his shoes to the floor on Monday, and then smiled because he put his feet on them.
70) A decision-making work starts with a concise statement, which also helps to narrow the scope.
7 1) Crows are probably the most common and easily recognized members of native American plants and animals.
72) When he used his refrigerator design to deliver butter to the market, he found that customers would miss something that melted rapidly in the bathtub. His competitors paid a premium to buy butter, which was still fresh, hard and tidy in his memory, with 65,438+0 pounds of bricks.
73) The nervous system of vertebrates is characterized by the enlargement of the head area where the hollow and dorsal nerve cords terminate and the enlargement of the brain.
74) When the airflow moves, the droplets are released, so that the displacement of the net droplets is zero, even though the droplets are constantly moving.
75), may occur in high rainfall areas or coastal areas where rivers enter the sea.
76) Even the discovery of human tooth fossils on scratches provides clues.
77) These competing forces rarely achieve a perfect balance between hot and cold operations, creating a phenomenon, such as the steam cave in Mount Rainier National Park.
78) The members of the Committee rotate every year, so new voices and opinions are constantly heard.
79) Most substances are organized into stars in cosmic galaxies, as well as gases and dust.
80) It is understood that the reaction of a cat or dog is a mirror in its own image, but it often regards it as another person's behavior, which soon becomes inexplicable and annoying.
8 1) the rent control system is that the local government tells the owners how many tenants can collect rent.
82) Their right to exist is frozen in the movable snow in a shelter called "High Seas Dome".
83) Female-toed gulls mate and other gulls stand, so they will not be overweight and lose knowledge.
84) Pale and smooth desert plains provide a perfect background for the discovery of meteorites, which are usually dark brown and black.
85) partly reflects the depression and war in the low reproductive period, but it also causes changes in Canadian society.
86) At this time, send their freight trains, emails and passengers to ships, trucks and buses.
87) This record provides an in-depth understanding of the laws and causes of climate change in the past.
88) The baby boom lasted for ten years (1950), and the production population increased by nearly 15%. Five years (195 1) reached 1956.
89) The piano was perfected by the Italian guqin manufacturer at the beginning of18th century.
90) Puritans, a British colony dominated by sects in early North America, regarded laziness as a crime and thought that living in an underdeveloped country made it absolutely necessary for every member of society to perform economic functions.
9 1) This cohesion allows the water column to be removed to a huge highland without being broken.
92) Interpersonal tone may reflect words above thoughts and feelings, or it may cover up thoughts and feelings.
93) White paint began to replace the blue, yellow, green and lead colors that were popular on walls a few years ago.
94) From this stable platform, scientists lowered the drill pipe four miles underwater to find the core of marine sediments.
95) Everyone conveys his thoughts and ideas by choosing words. These words express pleasure or unhappiness through tones, and gentleness or harshness through inherent rhythms. These words are all in the language itself, and flow through phonetic rhythms, and are regularly unbalanced and hesitant, and finally through asphalt and melodic words.
96) Air pollution needs a very flexible definition, allowing constant changes.
97) Keenly, more and more people realize that social changes are linked to the huge growth of hot news in the late19th century, including the economic growth of the two magazines and newspapers in quantity and circulation.
98) This means that the population of Boston reaches once every few years, and most of it flows into the port city and Northeast China.
99) There are hard disk parts, whether internal or external, such as bones, teeth, scales, shells and wood; The remains of these partially decomposed bodies.
100) and 1886 to 1882, only the price of newspapers has dropped from 4 cents to 1 cent, which has greatly increased the demand.
10 1) ashes are placed at the bottom of each perforated bucket, and water is their input.
Trade in perishable commodities (No.102) is generally inspected by the state, and important staple foods such as wood and gunpowder are also controlled by the state.
103)18th century is the development of this powerful sculpture concept.
104) The first real machine for producing barbed wire was invented by farmers in Illinois in 1874.
105), especially in winter, it is very important for birds to keep warm at night and protect precious grain reserves.
106) In the time of 15 or 30 seconds, the historical background that a speaker can't establish has created this problem, and it is impossible to explain the possible reasons in detail, and it is impossible to review the alternatives and think that it is the best for others. In the clip, the politician asserts, but does not advocate.
107), the best refrigerator is one that cannot be cooled by melting ice, which is of course wrong, because it is melting ice.
108) this self-taught son, a farmer in Delaware, Evans has long been obsessed with the possibility of mechanized production and steam power.
The dream of building an X-ray microscope can be traced back to 1895. However, its development almost stopped in 1940, because the development and progress of electron microscope were rapid.
1 10) The residents of these new cities have thought that the main problem of urban inundation is the disorderly city that eagerly supports the reform and gradually realizes the promise.
1 1 1) Similarly, these boxes should be protected from direct sunlight, so as to avoid lethal growth of embryos at high temperature.
1 12) quickly proved financial success and.
1 13) The scope of new york pipeline system is still expanding in China. Inspired by Ohio and Indiana, the successful Erie Canal connects Lake Erie with the Ohio River.
1 14), but the water plants can be much higher: redwood trees can pump water to their top, more than 100 meters above the ground.
1 15) another explanation is that the moving aquatic plants take root on the basis of pressure and push the plants at the bottom of the water roots.
1 16) "In a quarter century, the party in People's Omaha Daily * * and 1883", they kept the American people consistent and broke through the characteristics and intolerance, which marked an independent chapter.
1 17) the noise of urban life and social interaction seem to be particularly curious about people who put forward isolation in rural areas.
1 18) If an animal can recognize its "self" in the mirror, it can be said that it has a sense of self-discipline, or consciousness.
1 19) 1000 The meteorite fragments that fell from 150 in 2000 were recovered in the past 20 million years.
Therefore, if consumers, especially those with limited income, distrust the conventional food supply and only buy expensive organic food, it will really attract people's attention.
12 1) once attracted by insects, some orchids are currently taking various one-way obstacle courses to ensure that they will not leave until the pollen is accurately placed or deleted.
122) silverware meets these requirements, melting money in a small furnace, adding some copper to form a more powerful alloy, and casting rectangular alloy blocks.
123) Although the birth rate continued to decline, the population almost doubled in the19th century, when every generation was resting.
124) and today, global civilization destroys the global environment.
125) Because in 2002, I knew there was no suitable job for him. He didn't scold me. He just gave me a stack of his books.
126) If the opinion is not confirmed, scientists must look for it further.
127) makes it easier for Mandan to protect himself from other people who may compete for some food stored by these thin farmers year after year.
128) Because the conductor seldom watches movies, it will be put on the night before (in fact, if the conductor was lucky enough to see it at that time), and music arrangement is usually the biggest worry.
129) in most cases, the railway plays an important role in literature, belonging to popular culture rather than serious art field.
130) The fortress also serves as a base for entrepreneurs to do business in the west, providing supplies and snacks for soldiers and pioneers.
13 1) This growth rate has exceeded the only history of Canada before. 10 years ago, grasslands were being solved.
132) the influence of a new household technology has drawn a clear dividing line between women in different categories and regions.
133) at any other time, you can see in the corona that only cameras and telescopes on special instruments are used to turn off the dazzling sun rays.
134) We are used to it, but we still have to talk about the movie "Silent" 27 years ago. Movies have never been completely silent.
135) This heavy tank and the deeper marine world discovered in this part.
136) naturally stipulates that in many cases, animals and plants are still protected from destruction.
137) during the years when the railway was "prime minister", between 1890 and 1920, there were several people in the United States, most of whom had a solid so-so experience and made writing a so-so career.
138) Native Americans in Northern California are very good at weaving baskets with reeds, grass, bark and tree roots. They find that there are fashionable terms and sizes around them, not only trays, containers and cookers, but also hats, fishing boats, fish traps, strollers and etiquette utensils.
139) if it weren't for this college, they would gobble up all the food in a very short time and might starve themselves to death.
140) Yili encourages the whole country to expand the management system by establishing several branches.
14 1) Douglas fir has increased significantly and often dies within seven years.
142) Lewis and Clark brought back a lot of new information, including knowledge. The African continent is even wider than originally thought.
143) shows that the interior of the earth is far from being unified.
144), these researchers try to prove that their work can be a valuable tool, not only for science, but also for history, providing new insights into the existence of ordinary people in daily life, otherwise there may not be such a good record.
145) Celestial bodies take on various shapes in the universe: round planets (some with rings), comets with tails, small beams of cosmic gas and dust clouds, ring nebulae, windmill spiral galaxies and so on.
My hands are really tired! !