NotuntilWorldWarIItousenewchem

首页 / 高中英语 / 试题详细

Not until World War II ______ to use new chemical techniques to purify penicillin.

A．they managed	B．that they managed
C．did they manage	D．they didn’t manage

登录免费查看答案和解析

相关试题

It was in the factory producced TV sets our friend was murdered.

A．which ; which

B．that ; which

C．that ; that

D．where ;that

收藏答案/解析

If we don’t start now, we must riskthe train.

A．being missed

B．missing

C．to miss

D．miss

收藏答案/解析

the children’s work, I saw the hope of tomorrow.

A．Impressing by

B．Impressing with

C．Impressed on

D．Impressed by

收藏答案/解析

He wasof having asked such a silly question.

A．sorry

B．shame

C．ashamed

D．regret

收藏答案/解析

I am sorry to keep you waiting. I’ll make shorter work of this.
—. I’m not in a hurry.

A．Take it easy

B．Take your time

C．That’s all right

D．Do as you please

收藏答案/解析

推荐套卷

热门套卷

粤ICP备20024846号

声明：本网站部分内容由互联网用户自发贡献自行上传，本网站不拥有所有权，也不承担相关法律责任。
如果您发现有涉嫌版权的内容，欢迎发送邮件至：service@youtike.com 或联系QQ：267757 进行举报，一经查实，本站将立刻删除涉嫌侵权内容。