2. 专升本
  3. Despite much research, there are still certain elements in the life cycle of the insect that _____not fully understood.

Despite much research, there are still certain elements in the life cycle of the insect that _____not fully understood.

admin2012-08-05  20
问题 Despite much research, there are still certain elements in the life cycle of the insect that _____not fully understood.
选项 A、are
B、were
C、is
D、was
答案A
解析 这里由引导的定语从句修饰复数名词elements，所以定语从句中的that代替的复数意义的名词，其谓语应该用复数形式；这里谈到的是现实存在的事实，排除B项。
转载请注明原文地址:https://jikaoti.com/ti/lXuGFFFM
本试题收录于： 英语题库成考专升本分类
0

英语

成考专升本

相关试题推荐
随机试题
最新回复(0)