Leaves are nature’s food factories. Plants take water from the ground through their roots. They take a gas called carbon dioxide (CO2) from the air. Plants use sunlight to turn water and CO2 into glucose(葡萄糖).Glucose is a kind of sugar. Plants use glucose as food for energy to grow. The way plants turn water and CO2 into glucose is called photosynthesis (光合作用).That means “putting together with light .” A chemical called chlorophyll helps make photosynthesis happen. Chlorophyll is green. It gives plants their green colour. As summer ends and autumn comes, the days get shorter and shorter. This is how the trees “know” to begin getting ready for winter.
During winter, there is not enough light or water for photosynthesis .The trees will rest, and live on the food they have stored during the summer. They begin to close their food-making factories. The green Chlorophyll disappears from the leaves. Then, we begin to see yellow and orange colours. A few of these colors stay in the leaves all the time. We just can’t see them in the summer, because they are covered up by the green Chlorophyll.
Red and purple colors we see in leaves are made mostly in the autumn. In some trees, like maples, glucose is stored in the leaves after photosynthesis stops. Sunlight and the cool nights of autumn turn this glucose into red. The brown color of trees like oaks is made from wastes left in the leaves.
1. The underlined word “chlorophyll” in the first Para means________in Chinese.
A 叶绿素 B 氧气 C 胡萝卜素 D 蛋白质
2.The way ________is called photosynthesis.
A. plants get CO2 from the air
B. plants take water from the ground
C. plants turn water and CO2 into glucose.
D. Plants use glucose as food for energy to grow.
3.The gas called carbon dioxide is from the ________
A ground B roots C air D sunlight
4.Which of the following is not true?
A. when autumn and winter come, the days get shorter and shorter.
B. During winter trees rest and live on the food they store during the summer.
C. During winter small amounts of yellow and orange colors are kept in the leaves all the time.
D. Trees begin to stop making food in summer.
高一英语阅读理解简单题
Leaves are nature’s food factories. Plants take water from the ground through their roots. They take a gas called carbon dioxide (CO2) from the air. Plants use sunlight to turn water and CO2 into glucose(葡萄糖).Glucose is a kind of sugar. Plants use glucose as food for energy to grow. The way plants turn water and CO2 into glucose is called photosynthesis (光合作用).That means “putting together with light .” A chemical called chlorophyll helps make photosynthesis happen. Chlorophyll is green. It gives plants their green colour. As summer ends and autumn comes, the days get shorter and shorter. This is how the trees “know” to begin getting ready for winter.
During winter, there is not enough light or water for photosynthesis .The trees will rest, and live on the food they have stored during the summer. They begin to close their food-making factories. The green Chlorophyll disappears from the leaves. Then, we begin to see yellow and orange colours. A few of these colors stay in the leaves all the time. We just can’t see them in the summer, because they are covered up by the green Chlorophyll.
Red and purple colors we see in leaves are made mostly in the autumn. In some trees, like maples, glucose is stored in the leaves after photosynthesis stops. Sunlight and the cool nights of autumn turn this glucose into red. The brown color of trees like oaks is made from wastes left in the leaves.
1. The underlined word “chlorophyll” in the first Para means________in Chinese.
A 叶绿素 B 氧气 C 胡萝卜素 D 蛋白质
2.The way ________is called photosynthesis.
A. plants get CO2 from the air
B. plants take water from the ground
C. plants turn water and CO2 into glucose.
D. Plants use glucose as food for energy to grow.
3.The gas called carbon dioxide is from the ________
A ground B roots C air D sunlight
4.Which of the following is not true?
A. when autumn and winter come, the days get shorter and shorter.
B. During winter trees rest and live on the food they store during the summer.
C. During winter small amounts of yellow and orange colors are kept in the leaves all the time.
D. Trees begin to stop making food in summer.
高一英语阅读理解简单题查看答案及解析
Apart from the shortage of water and food, the survivors in Haiti are _______the terrible plague(瘟疫).
A.in search of | B.in charge of | C.at the mercy of | D.as a result of |
高一英语单项填空中等难度题查看答案及解析
The changes of the plants and animals in an area ________ from differences in climate and the nature of the country.
A. rise B. raise C. arouse D. arise
高一英语单项填空简单题查看答案及解析
Why did the woman’s plants die, according to the man?
A. From not enough water. B. From not enough sun. C. From not enough plant food.
高一英语短对话简单题查看答案及解析
Algae(水藻) are very simple plants. They grow in fresh water or salty water. Seaweed is algae that grow in salty water. Seaweed is red or brown in color. The Japanese people use these plants from the sea in many ways. From it, they make a food called Kombu. Kombu is seaweed that has been dried, cooked and pressed together. Then it is dried again and cut into long pieces. The Japanese eat a lot of Kombu and like it very much.
Japanese farmers often use seaweed as fertilizer. It makes their plants grow better. Many farmers also find seaweed makes a fine food for their animals.
From seaweed the Japanese also get iodine(碘), which they sell to other countries. Iodine is used in many ways all over the world. It is used in making medicine. It is added to the salt we use at the table. Scientists even use one form of iodine to “ seed clouds” when they want rain to fall.
1. Kombu is a kind of ____ according to the text.
A. plant B. medicine C. food D. fertilizer
2.In the last sentence of the text, “seed clouds” means ____.
A. clouds spreading like seeds
B. the seeds like clouds
C. to make rain fall with human power
D. dropping seeds by clouds
3.The main idea of the story is that ____.
A. The Japanese eat seaweed when they want rain to fall.
B. Kombu is made into medicine for farmers.
C. The Japanese use seaweed in many ways.
D. The Japanese eat a lot of Kombu.
高一英语阅读理解简单题查看答案及解析
Wastes from the factory ______the water pollution in this area.
A.resulted from | B.paid off | C.paid back | D.resulted in |
高一英语单项填空简单题查看答案及解析
Nearly all our food comes from the soil. Some of us eat meat, of course, but animals live on plants. If there were no plants, we would have no animals and no meat. So the soil is very necessary for life. The top of the ground is usually covered with grass or other plants. There may be dead leaves and dead plants on the grass. The waste matter (粪) from animals also falls on it.
All soil needs food. If we do not give it any, the plants will be weak. Farmers found that animals’ waste is the best food for the soil, but chemical fertilizers (化肥) are also very useful. The same crop (庄稼) should not be grown in the same place every year; it’s better to have a different crop. A change of crop and the use of a good fertilizer will keep the land good.
1.What would happen first without plants?
A.People would have more crops. B.Animals would die.
C.There would be more food. D.There would be less soil.
2.What does the writer tell us in the first paragraph (段落)?
A.Leaves, plants, grass and waste live on each other.
B.There would be no animals without meat.
C.There would be no plants without animals.
D.People, animals, plants and soil live on each other.
3.Which is the best food for soil in the field?
A.Chemical fertilizers B.Plants and grass. C.Animals’ waste. D.Different crops.
4.Why do we often grow a different crop in the same place every year?
A.Because we can keep the soil rich this way.
B.Because we don’t have enough land.
C.Because we want to have a different food.
D.Because we do this as a habit.
5.What is the best title for the passage?
A.Soil and Waste B.Plants and Animals C.Food and Waste D.Soil and Food
高一英语阅读理解中等难度题查看答案及解析
These plants are watered __ .
A. every a few days B. every third day
C. every others day D. each two days
高一英语单项填空简单题查看答案及解析
These plants are watered________.
A. each other day B. every other day
C. each of two days D. every of two days
高一英语单项填空中等难度题查看答案及解析
These plants are watered___________.
A. each other day B. every other day
C. each of two days D. every of two days
高一英语单选选择中等难度题查看答案及解析