But the chloroplasts use up the chlorophyll during photosynthesis, and a fresh supply is needed. Where does it come from? One idea was that when an animal absorbed chloroplasts, they came with a lifetime supply of chlorophyll.But as it turns out, that’s not the case with these sea slugs. They have stolen more than just chloroplasts.
这是一篇科普文。美国科学家最近发现了软体动物海蛞蝓的一种奇怪的生活习性:它能吸收植物的叶绿体,存入体内,自己进行光合作用,从而获取食物。
1.When people say“You are what you eat”,it generally means that ________.
A.the nutrition in a person’s diet affects his or her health
B.you’ll finally become something if you eat something
C.all people must be responsible for their actions
D.the diet cures more than the doctor
解析 句意理解题。根据下文所举实例可知,此句的意义不是你吃了什么就会变成什么。采用反证法可推知,此句的意义是“人如其食”,即饮食决定健康。
答案 A
2.We can infer from the text that John Zardus is a scientist who ________.
A.gives suggestions on the recipe
B.observes the evolution of the plant and animal life
C.studies animals without backbones
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