The speaker mainly discusses________. [br] [originaltext]Culture can be defined

游客2023-12-24  30

问题 The speaker mainly discusses________. [br]  
Culture can be defined as behavior that is learned and transmitted to members of a group. A child learns a particular behavior through observation as well as through positive and negative feedback from his/her family and peers. A minor point to remember is that this feedback can be overt or covert. Much covert feedback involves nonverbal cues that an outsider to that culture would not understand.
There are exceptions to the rule of male insects being smaller than the females, and some of these exceptions are intelligible. Size and strength would be advantage to the males which fight for the possession of the females, and in these cases, as with the stag-beetle, the males are larger than the females. There are, however, other beetles which are not known to fight together, of which the males exceed the females in size. But in some of the other cases, as with the huge Dynastes and Megasoma, we can see that there would be no necessity for the males to be smaller in order to be matured before them, for these beetles are not short-lived.

选项 A、Male insects are always smaller than females.
B、In a given species nature provides differences between sexes to secure successful production.
C、Size and strength protect females from other females.
D、Longevity is characteristic of the Dynastes and Megasoma.

答案 D

解析 能够利用信号词判断段落的脉络主线,可以有效帮助识别正确答案。如本题中原文第一句点明了全段中心There are exceptions to the rule of male insects being smaller than the females,即谈论雄性昆虫比雌性昆虫个头小这一规律有特例。然后根据某些短语如in these cases…There are,however,other beetles…But in some of the other cases…等发出的信号,可判断文章基本结构是以三种昆虫的例子来说明中心,这样可迅速排除与原文中心意思不符的A和并非本文谈论中心的B和C。
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