三个2000.8的问题 35 36 38

35.rodents dwell in various habitat , some species being aquatic,some terrestrial.

habitat是否复数，being无错咩？

36,the nectar of flowers are ingested by worker bees and converted to honey in special sacs in their digestive systems.

are ingested 无错？应该是被动语态。

38.the sensation of sound is produced how vibrations transmitted through the air strike the eardrum.

vibrations transmitted through the air strike the eardrum.为什么有两个动词，而如果是transmitting还说得过去

36应该是 is ingested

还没有全部答啊？

35.various 后加复数形式.habitats

36.the nectar是单数,再说,前面加了定冠词,当然后面跟单数is喽.而且花蜜应该是被蜜蜂吸取的,所以是被动呀.

38.how改为when,本题是意思不对.当振动通过空气的传播刺激到耳膜时, 我们便感觉出声音了.

好象是这样的...

以下是引用玉观音在2005-5-18 0:40:00的发言：

35.various 后加复数形式.habitats

36.the nectar是单数,再说,前面加了定冠词,当然后面跟单数is喽.而且花蜜应该是被蜜蜂吸取的,所以是被动呀.

38.how改为when,本题是意思不对.当振动通过空气的传播刺激到耳膜时, 我们便感觉出声音了.

好象是这样的...

being 不会错的~~  很多时候都是可有可无