It is recommended that the screw ______ to increase accuracy of measurement.

admin2013-05-22  27

问题 It is recommended that the screw ______ to increase accuracy of measurement.

选项 A、is used
B、was used
C、be used
D、had been used

答案C

解析 It is recommended后的主语从句必须使用虚拟语气,其表现形式为“should+动词原形 (should可省略)”,由此可见答案应为C。类似用法的还有it is desired(suggested,ordered, proposed,necessary,important,decided等)。
转载请注明原文地址:https://kaotiyun.com/show/eleC777K
本试题收录于: 英语题库成考专升本分类
0

最新回复(0)