2. 外语
  3. A、The reproductive cycle of barnacles. B、A new source of protein. C、Types of sea animals. D、The adhesive quality of barnacles.

A、The reproductive cycle of barnacles. B、A new source of protein. C、Types of sea animals. D、The adhesive quality of barnacles.

admin2010-10-14  39
问题  
M: Did you watch" Undersea Discovery" last night?
W: No, I missed it. Did you?
M: Yeah. It was pretty good--it was about barnacles.
W:  Hmm.
M: You know how they stick themselves to stuff in the ocean－like rocks or boats?
W:  Uh-huh.
M: Well, they do that when they’re young, and then they stay in the same place forever.
W: It figures. Have you ever tried removing one of those things? Last summer I tried to scrape some off a pier—I had to give up after a while. You’d think they wouldn’t be able to stick like that underwater.
M: Yeah. These biomedical researchers were talking about its possible uses. Orthopedists could use it for mending broken bones; or it could be used in dentistry.
W: I wish I’d seen that.
选项 A、The reproductive cycle of barnacles.
B、A new source of protein.
C、Types of sea animals.
D、The adhesive quality of barnacles.
答案D
解析 这是一道考主题的题目，通常只要抓住反复出现的词汇就可解题。本文只提到了一种海底生物，就是barnacles(藤壶，附着在水下船底或柱石上的贝属动物)，所以可以排除选项C。反复出现的单词是“strongest adhesives(带黏性的)in nature”，“synthetic glues”(胶水)，“stick”(粘住)等等，所以可以判断不是在讲barnacles的reproductive cycle，而是讲它们的adhesive quality，所以得出答案D。
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大学英语四级

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