英语阅读(急)任务型

题目

英语阅读(急)任务型
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.______ 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.That means “putting together with light”.______ It gives plants their green color.
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._______ The green chlorophyll disappears from the leaves.Then,we begin to see yellow and orange colors.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

答案

答案：BCDA
1）第一个空格后出现了Glucose（葡萄糖）,这个词在空格前是没有滴,则表示是出现在填空的句子里,那么C,D可被淘汰,而A句中有THIS,表示之前有提过Glucose,A也被淘汰了.另外,B的意思是：植物利用阳光使水和二氧化碳转变成葡萄糖.而前文大意是说：叶子是自然的食物制造厂.植物通过树根从大地吸取水分.从大气中吸取一种叫二氧化碳的气体._______葡萄糖是一种糖.B代入空格中能承上启下,十分通顺.
2）第二个空格的前文有提到光合作用（photosynthesis）,而空格后面的句子的意思是：它赋予了植物绿色.结合4个选项的意思只有C合适：一种叫chlorophyll（叶绿素）的物质使光合作用发生作用.
3）第三个空格的前文大意是：冬天,没有足够的阳光或水用于光合作用.树将会休息,并靠夏天时存储的食物存活.要休息,并且靠夏天存储的食物,则表示冬天不再生产,则D合适：它们开始关闭它们的食物制造工厂.
4）最后一段大意是说：我们所看到的红色和紫色的叶子大多是在秋天时产生的.某些树,像枫树,在光合作用停止后葡萄糖留在了叶子里.A：阳光和冷秋的夜晚使这种葡萄糖转变成红色.A中的AUTUMN,GLUCOSE,RED,都和前文的内容相承接呼应.