jujube tree

The first day of the year begins.

Jujube trees are still bare.

Its twigs are exposed.

Spring is coming

The spring breeze blew slightly, overnight.

Look! It has small green leaves.

It wants a newborn baby.

Living under the care of Miss Chun

Summer is coming.

The baby grew up and the leaves turned green.

Became a struggling pupil.

How lively and lovely.

Autumn is coming.

The student became a young man.

In its hard work, it gained the fruit of labor-jujube.

Through unremitting efforts

The harvest is even greater-it has become a big jujube.

Winter is coming.

Young people are getting old.

Bare again.

It is eager for the next four seasons.

What are the appearance characteristics of lotus? Urgent!

Lotus is a perennial aquatic plant. Rootstock (lotus root) is thick and knobby, born in sediment. The leaves are shield-shaped, round, dark green on the surface, gray-green with waxy white powder on the back, and undulate all over. Petiole cylindrical, densely barbed. Flowers are solitary at the top of pedicels and above the water surface, with single petals, compound petals, double petals and double petals. Colors are white, pink, crimson, lavender or intermediate colors; Stamens are numerous; The pistil lotus is free and buried in an inverted conical sponge receptacle. There are many scattered honeycomb holes on the surface of receptacle. After fertilization, it gradually expands into a lotus, and a small nut (lotus seed) is born in each hole.

Urgent! Somebody help me answer it! thank you

This is absolutely impossible, it will cause nutritional imbalance!

Every food has its unique nutritional value. Your sister is pregnant!

Eat if you have no appetite, otherwise it will cause fetal growth retardation.

Perhaps, before pregnancy, we have heard all kinds of statements about the diet during pregnancy. Some sayings have even been circulated for two or three generations. However, some of them are contradictory, while others make us skeptical. Here, we have collected 10 questions that pregnant mothers are most concerned about, and let nutritionists answer our questions.

During pregnancy, if we are well nourished, it is good for ourselves and the fetus. It can ensure that the fetus develops well, and at the same time we can face the delivery with energy. However, in our hearts, we are trying to find a balance point: we should not let ourselves become too bloated and our children be born deficient. At the same time, it can also maintain physical strength and calmly welcome the arrival of the little baby. Fortunately, all these goals can be perfectly reconciled. Of course, the premise is a balanced diet and scientific conditioning.

Q 1 Do you want to eat twice as much?

A If you have a balanced diet and a reasonable amount, just keep it. There is no need to eat more. In order to ensure the better development of the fetus in the abdomen, we really need to consume more calories than usual, but it doesn't mean that we can meet the needs of the fetus by changing our eating habits. In fact, as women, we have a good physiological foundation, and our genes and physical functions can fully meet the needs of pregnancy. In the first trimester, we begin to store energy: we store enough fat and protein (mostly stored in muscles). During this period, the weight of the fetus is growing slowly, and her growth and development is mainly to shape and form organs. However, from the fifth month of pregnancy, our stored energy will be used, because from this time on, the growth of the fetus needs enough energy.

Q2: Control your weight and don't eat fat?

A don't exclude fat especially during pregnancy, because fat is essential for the formation of fetal nervous system and cell membrane. Next, we have another question. We know that fats are divided into two categories: good fats (unsaturated fatty acids, such as the famous omega -3) and bad fats (saturated fatty acids, such as butter or fat in full-fat dairy products). Should I eat both kinds of fat during pregnancy? The answer is clear: yes, because the fetus needs all kinds of fat. If at a certain stage of pregnancy, the fetus lacks some fat that should be obtained, and this fat cannot be compensated in the later period. Therefore, pregnant women can't be vegetarian! Of course, there is another thing to be reminded: don't ignore the hidden fat. If the cooked food already contains fat, there is no need to add more fat.

Is ω-3 beneficial to pregnant women?

ω-3 is an unsaturated fatty acid which is very important for human health. It is worth mentioning that the latest research shows that from the beginning of pregnancy, the intake of rich omega-3 fatty acids is helpful to prevent premature delivery and reduce the risk of hypertension and obesity in pregnant women.

However, omega -3 cannot be formed in the human body and must be ingested in food. Therefore, we should pay attention to adding foods rich in omega -3 in our diet. ω-3 mainly exists in flaxseed, nuts, tuna and other fish. For your convenience, you might as well follow the following small recipes: guarantee 3 tablespoons of rapeseed oil or walnut oil every day, preferably raw, and eat fatty fish (herring, mackerel, Sha Ting fish and salmon) three times a week.

Q3 Do you need to ban sugar?

We should change our misunderstanding about sugar! In fact, glucose is indispensable in life. Sugar can not only provide energy, but also burn fat. During pregnancy, it is definitely not the time to refuse sugar. Because the placenta can filter sugar, the blood sugar content of the fetus is three times lower than that of the mother. If you refuse sugar intake again, the fetus will have hypoglycemia! Like fat, sugar can be divided into good sugar (slow sugar) and bad sugar (fast sugar). In fact, this distinction is very absurd. We should use all kinds of sugar, at the same time, as long as we avoid the sudden increase of blood sugar after digestion. Therefore, when designing recipes, we should choose foods that contain both sugar, protein and fat, and avoid simply getting sugar from chocolate or drinks with high sugar content.

Q4 Do you need to eat more dairy products?

Answer yes. Because the growth and development of the fetus needs to absorb a lot of calcium, the blood calcium content of expectant mothers will also decrease. At this time, once the parathyroid gland, which is responsible for regulating phosphorus and calcium content in the expectant mother's body, discovers this situation, it will secrete a hormone to make the kidney produce vitamin D, thus improving the intestinal absorption rate of calcium. In this way, the mother's blood calcium will soon return to normal. Of course, we are not saying that pregnant women can't eat dairy products. But eating dairy products 2-3 times a day is enough, which is not what people usually say. There is also a small suggestion: it is best to choose skim or semi-skim dairy products instead of full-fat dairy products or cheese rich in saturated acids.

Q5 Do you want to take tonic regularly?

A products with vitamins and trace elements marked "for pregnant women only" are unnecessary for pregnant women. They are only designed for pregnant women with a very unbalanced diet. If so, you'd better start by correcting your eating habits. In addition, these products are also suitable for expectant mothers with gastrointestinal absorption problems. Although they have a good diet, they can't absorb the necessary nutrients. However, in either case, you must consult a doctor before taking these products. The doctor will give you personalized advice according to your situation. Otherwise, if we blindly ingest some vitamins or trace elements that we don't need, it may be counterproductive.

Q6 Some foods can avoid fetal malformation?

A folic acid deficiency or vitamin B9 deficiency has been proved to have the risk of fetal malformation, especially spina bifida, abdominal wall malformation and rabbit lip. Therefore, we strongly advocate eating foods rich in folic acid. Animal liver, egg yolk and green vegetables (such as spinach, beans, bamboo shoots and celery) are rich in folic acid. It should be noted that we need to supplement folic acid before and at the beginning of pregnancy, because that is the period of embryo formation.

Q7 I am a vegetarian. Does this affect my baby?

Vegetarians can be divided into two categories: vegetarians who don't eat meat and vegetarians who don't eat all animal-related foods. It's just that vegetarians who don't eat meat are easier to deal with They can get enough protein from eggs and dairy products. Because protein is an integral part of our cellular foundation and an indispensable "brick" for building a child's body. However, if you are a real vegetarian, that is, if you don't eat all the foods related to animals, it is difficult to maintain a balanced diet. At this time, we need to spend some time carefully designing our recipes.

Q8 Must I drink 1.5 litres of water every day?

A Actually, the water volume of 1.5 liter is only a symbolic figure. Different people, different diets, different physical activities, different temperature environments require different amounts of water. So, how do you know if you have drunk enough water? We can observe our urine output. If you excrete 1.5 liters of urine within 24 hours, it means that your water consumption is sufficient. However, the problem now is that we can't measure our urine volume. Then, we can be flexible and observe the number of times we go to the toilet.

Q9 Do you need mineral water?

According to different water sources and water treatment methods, the quality of tap water varies greatly. However, tap water is drinkable. If conditions permit, it is best to consult the local water conservancy department about the composition of tap water. For example, check whether each liter of water contains 1.5 mg of fluoride (so as to ensure that the baby has strong teeth), and each liter of water contains at least 50 mg of nitrate. Then, according to your own taste, if you feel that tap water is not good to drink, you will not hesitate to drink bottled water. You can give priority to mineral water rich in calcium, magnesium or fluorine, and you should also think of changing brands frequently, so that you can absorb various minerals. One thing to note: many mineral waters contain sodium, and excessive intake will cause high blood pressure. But please rest assured that if you only drink 1 liter or 1.5 liter of water every day, there will be no risk of hypertension.

Q 10 Must I not drink alcohol during pregnancy?

Answer yes, absolutely not! Because alcohol easily passes through the placenta and is directly absorbed by the fetus. When the mother drank an aperitif or two and felt very excited, the fetus was drunk. If this happens frequently, the fetus will be damaged: the fetus may be mentally retarded after birth (according to recent research, drinking two cups a day during pregnancy will reduce the IQ of the baby), have personality disorder or physical deformity, and so on.

What is dangerous food?

It is true that some foods may contain bacteria harmful to the fetus. Listeria exists in cooked meat, raw milk and cheese; Toxoparasites exist in undercooked meat and unwashed vegetables.

Taking some sanitary measures can obviously reduce the risk of infection: washing hands before and after cooking; Clean the refrigerator with detergent every week; After cutting raw food, wash all kitchen utensils (knives and chopping boards) with bleach; Carefully wash raw vegetables and pay attention to cooked meat; Leftovers should be thoroughly heated; Uncooked vegetables, meat and cooked vegetables in the refrigerator should be placed separately.

It's not easy for me Give me some points!

I wish your sister a healthy baby!

Physics problem solving, urgent, online, etc.

C

The correct rate of B is higher. What is this topic? One is wrong. If it is a, then the density of the nucleus is uniform. If it is B, what does proton neutron electron revolve around?

c，

C and D are right, but the correct answers are C and D. Language error: What are the two kinds of particles in the nucleus? It's not just. . . But inside! What book? . .

A

B, this is the sequence of molecules, atoms, nuclei, electrons, neutrons, protons, quarks, neutrinos, electrons, gluons, photons, bosons and gravitons.

b， 1342

Electron proton neutron

Proton negative electron

The little silkworm turned into a moth. The composition (needs photos) is urgent!

I have no photo composition. As for you, it doesn't matter as long as it can help you.

Tell you what! I am an animal fan! Because small animals are so cute! I have raised cats, puppies, parrots and rabbits ... but I also like raising young silkworms!

Just a few months ago, my mother brought me hundreds of silkworm eggs from her class. Since then, every time I come home from school, my mind is full of these silkworm eggs the size of rice grains! My "after school schedule" has also changed: at noon every day, I don't do my homework at noon like before, and I start to work hard after dinner. As soon as these silkworm eggs arrive, I throw away my homework every time I rush home and start to observe my little baby carefully. It will be almost the afternoon. My schoolbag was thrown on the chair, and the first thing I did was to visit my little silkworm! Everything comes to him who waits! I don't know if I go to see them every day or what. All my young silkworms have come out of their eggs. When they first appeared, they were very thin and short. They climbed slowly onto the mulberry leaves like tunnel diggers, and soon dug a slender "tunnel"!

A few days later ... my little silkworm has gradually "evolved", but it is still shorter and eats more and more mulberry leaves. I really doubt that they are engaged in a "pregnant silkworm" activity, and eating is called that fast! And still scrambling to eat there, little silkworm! I took you there! I really hope you will grow up soon! So I don't need to get you so many mulberry leaves!

Time flies, blink of an eye, time flies, my silkworm is already very thick and long! Alas! How can my grievance be so ineffective? I expect you to eat less when you grow up, because you were growing up then! But ... I am really speechless. I just sprinkled a lot of mulberry leaves, and after ten minutes, the leaves have become a veritable "hornet's nest"! You shouldn't call it silkworm, it's more realistic to call it "pig, pig and silkworm"!

My silkworm has stopped eating mulberry leaves and started to build her own small room. First find a corner, then spin, first fix, then spit in a circle, and finally spit in it. Note that it is three tones, but don't pronounce it as four tones! ) into a lovely cocoon, there are several colors, white, light green, gold, light yellow, very beautiful! I wish they would come out soon!

Whoa whoa whoa whoa! ! ! Last Saturday morning, I went to see the cocoon just after washing, and found many "little moths" standing on it. I took a closer look and it all came out. They are really cute. A pair of black eyes and tentacles are all white, while chubby female males are very thin and comfortable to touch their bodies. Although they have wings, they are stupid and can't fly! That's right, don't be afraid of them flying away! Sissy!

Wow! My silkworm finally laid eggs. Those eggs were yellow at first, and finally turned gray. I really hope that next spring will come soon! So I can raise silkworms again! Even!

Urgent! Senior one geography questions, online, etc!

1 The high pressure (anticyclone) is located in the northern hemisphere.

Judgment basis: the high-pressure (anticyclone) airflow rotates clockwise in the northern hemisphere (counterclockwise in the southern hemisphere).

2. Downward flow is common in this center.

The pressure value of the isobar closest to the center is higher.

The weather in this area is characterized by sunny and dry weather.

Air sinks, temperature rises, and water vapor is not easy to condense. )

Tip: the cyclone arrow is inward, and the northern hemisphere is counterclockwise. The southern hemisphere is clockwise. As long as the airflow rises, the atmosphere will be unstable and rainy weather will occur.

The arrow of anticyclone is outward and the northern hemisphere is clockwise. The southern hemisphere is counterclockwise.

A geographical common sense problem is imminent.

I can't understand your question. Is the direction of the left hand left?

From north to south, this is the view on the map.

When the sun rises, it faces the sun, with the east in front, the west behind and the north and south on the left.

When the sun goes down, you can turn your back on the sun. The above relationship still applies, but it is only a general idea, which varies according to your own position on the earth.

How about Re browser root phone? urgent

Root 1。 Start the software on the computer first, which can be started from the computer housekeeper. Then click Connect Phone-please connect your phone with USB cable when you see it. Then the phone goes into settings-the developer option is turned on-USB debugging is turned on-and then on the pop-up interface, click on the turned-on USB debugging. After that, the phone will display whether USB debugging is allowed-OK. 2. After successfully connecting the mobile phone and the computer application treasure, it will install the driver by itself, and you will see the brand and model of the mobile phone in the upper left corner of the application main interface. Click the Toolbox in the upper right corner-Remove Root-If it is removed, it will show that the permission has been successfully removed. The permit will be cancelled.

Mathematical graphics transformation problem: hurry up! Urgent! Urgent!

Rotate 90 degrees clockwise.

Rotate 90 degrees counterclockwise.

Move 2 units to the right

Move two units to the left

Anti-drug proposal 400 words. How to write? Urgent! Urgent! Urgent!

Thank the teacher for saying the word "thank the teacher". My light shines on my heart. Ah, every time I think of you, dear good teacher, a warm current stirs in my heart ... "Without sunshine, there would be no million. ...