题目内容

【题目】【2013安徽】Mrs. King put a coat_____________ the sleeping girl to keep her warm.

A. over B. with C. behind D. beside

【答案】A

【解析】

试题分析:over “在……上面”;with意为“和”;behind意为“在……后面”; beside意为“在……旁边”。根据句意“为了保暖,Mrs. King在睡着 的小女孩身上放上一件外套”。故选A。

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【题目】 We all enjoy the colors of autumn leaves. Did you ever wonder how and why a leaf changes color? Where do the yellows and oranges come from? To answer those questions, we first have to understand what leaves are and what they do.

Leaves are the world's food factories. Plants take water from the ground through their roots and take CO2 from the air. Plants use sunlight to turn water and CO2 into glucose(葡萄糖), a kind of sugar. Plants use it as food for energy and growing.

A chemical called chlorophyll(叶绿素) in the leaves gives plants their green color. As summer ends and autumn comes, the days get shorter and shorter, and trees know it's time to begin getting ready for winter.

During winter, there is not enough sunlight or water. Trees rest during this time and live on the food they store during the summer. They begin to shut down their foodmaking factories. As the green chlorophyll disappears from the leaves, we begin to see yellow and orange leaves.

The bright reds and purples we see in leaves are made mostly in autumn. In some trees, like maples(枫树), sunlight and the cool nights of autumn turn the glucose in the leaves into a red color. And we can enjoy the beautiful red leaves during autumn.

1Which of the following can you put in the box?

sunlight CO2 glucose

A.waterB.sugarC.windD.air

2Why do the leaves turn yellow in autumn?

A.Because they are short of glucose and energy.

B.Because they are short of sunlight and water.

C.Because they are short of sunlight and CO2.

D.Because they are short of water and CO2.

3Which of the following is NOT true according to the passage?

A.When autumn comes, the days get shorter and shorter.

B.During winter, trees live on the food they store in summer.

C.Trees begin to stop making food and to have a rest in summer.

D.During winter, some of yellow and orange colors are still in the leaves.

4What's the main idea about the passage?

A.It tells us all kinds of plants on the earth.

B.It tells us the plants can grow well with the sunlight.

C.It tells us maple leaves change the color as other trees.

D.It tells not all the colors of the leaves are from chlorophyll.

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