______life could be found on Mars was once believed by scientists.

admin2018-01-18  29

问题 ______life could be found on Mars was once believed by scientists.

选项 A、What
B、As
C、That
D、While

答案C

解析 句意:科学家曾认为火星上能找到生命。名词性从句题。分析句子结 构可知,本句为主语从句,且从句中不缺少成分,所以应用that来引导,that在从句中 不担当任何成分,本身也没有词义,但不能省略。故选C。
转载请注明原文地址:https://jikaoti.com/ti/7qIGFFFM
本试题收录于: 英语题库普高专升本分类
0

最新回复(0)