________ is often the case with human beings, many animals sleep a lot when youn
题型：不详难度：来源：
| ________ is often the case with human beings, many animals sleep a lot when young, but sleep much less when they get older. |
答案
| C |
解析
| C 考察定语从句，句义：和人类一样，很多动物在年幼睡觉时间多，长大以后就睡得少了。引导非限制性定语从句时候，as可以放在句首，或者主语之后，which不放在句首，BD两项不能指代全局。故C正确。 |
举一反三
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