对“双百”方针叙述错误的是
A.是党领导文学艺术和科学研究工作的正确方针
B.提出于20世纪60年代
C.促进了文学、艺术、自然科学的新发展
D.其实践过程也遇到过曲折
答案:B
常用的倒凹深度有()
A.0.20mm
B.0.25mm
C.0.50mm
D.0.75mm
E.1.00mm
— Did you catch what I said?
— Sorry. I ________ a text message just now. [ ]
A. had answered
B. have answered
C. would answer
D. was answering