十字花科霜霉病在北方以（）随病残体散落土中、种子中越冬、越夏；病菌也能以（）在病组织内越冬。

A. difficult不容易的
B. certain无疑的
C. dying垂死的
D. extraordinary不平常的

A. incomplete 不完全的
B. unprecedented 前所未有的
C. dislike 反感，讨厌
D. disbelief 不相信

A. “Don’t stop working,” he said. ——“继续干活，”他说。
B. I couldn’t agree more. ——我完全同意。
C. Ten-percent discount! ——打九折！
D. It was beyond his power to sign this contract. ——签订这份合同超出了他的权限。

A. The criminal is still at large.——罪犯依然在逃。
B. You could have helped me.——你（刚才）为什么不帮我啊？
C. She failed to turn up yesterday.——她昨天没有来。
D. The world nowadays is far from being peaceful.——今天的世界还很不安宁。