1. Science includes mathematics, chemistry, physics and biology.

2. Liberal arts subjects include English, Chinese, politics, history and geography.

3. There are four types of memory: visual, auditory, action and comprehensive.

The collections in the library are classified by countries, including China and foreign countries.

For example:

1. China found a whale weighing nearly 40,000 kilograms, about 17 meters long, and a tongue was as heavy as dozens of big fat pigs.

2. Suzhou gardens pay attention to the beauty of every corner. There are some books with grass beside the steps.

Clouds can predict the weather. For example, in Xinjiang, fainting means rain.

Scientists have put forward many ideas, for example, to establish an immigration base on Mars or the moon.

For example:

1. Mature persimmons are like small lanterns hanging on branches.

2. White clouds are like blooming chrysanthemums and proud and delicate peonies.

3. Mature sorghum is like a torch.

These chrysanthemums look like colorful hydrangeas from a distance, and look like exquisite silk from a close distance.

Column number:

1. Cod lays eggs once10 million, and less than 1% of the eggs actually become young fish.

At present, there are only over 3,000 tigers in China.

3. Apples can be kept fresh for 7 ~ 10 days in the shade.

Zhao Zhouqiao is magnificent, with a total length of 50.82 meters and a width of 9.6 meters at both ends.

For comparison:

1. A pair of snow-white swans float on the water like two giant Bai Lianhua.

The long tail of the little black cat swings from side to side like a little whip.

These cows are black and white, as if wearing cotton-padded jackets.

Suzhou gardens are different from Beijing gardens, and painting is seldom used.