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  3. There are exceptions to the rule of male insects being smaller than the females, and some of these exceptions are intelligible.

There are exceptions to the rule of male insects being smaller than the females, and some of these exceptions are intelligible.

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问题     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 an advantage to the males which fight for the possession of the females, and in these cases, as with the stag-beetle (Lucanus), 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, and the meaning of this fact is not known, but in some of these cases, as with the huge Dynastes and Megasoma, we can at least see that there would be no necessity for the males to be smaller than the females, in order to be matured before them, for these beetles are not short-lived, and there would be ample time for the pairing of the sexes.  
The male Lucanus is particularly ______.
选项 A、adaptable
B、strong
C、intelligent
D、belligerent
答案D
解析 雄性的锹形甲壳虫尤其好斗。本文的第二句说，雄性的锹形甲壳虫比雌性甲壳虫要大、要强壮。在同一句，我们了解到雄性甲壳虫为得到雌性甲壳虫而争斗。所以说，雄性甲壳虫尤其好斗。
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