游客
题文

Chang’e2 did many experiments, ______ I think are of much help for knowing space.

A.which B.what C.when D.where
科目 英语   题型 单选题   难度 中等
登录免费查看答案和解析
相关试题

The precious paintings were hopelessly______ by long exposure in the cold, damp garage.

A.harmed B.ruined C.damaged D.injured

_______ is no possibility________ the engineer can complete the project within two weeks.

A.There; that B.It; that C.There; what D.It; whether

______ the crown of the second season of The Voice of China, Liqi devoted himself to practicing singing.

A.Winning B.Won C.To win D.Having won

The students took the trouble _____ all the ______ leaves away.

A.to clean, fallen B.to clean, falling C.cleaning, falling D.cleaning, fallen

--- Two tickets for Sunday.
--- Sorry, we’ve got _____ left.

A.nothing B.anything C.no one D.none

Copyright ©2020-2025 优题课 youtike.com 版权所有

粤ICP备20024846号