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。
1. Which one is correct to express the meaning with the affirmative form?
A. difficult不容易的
B. certain无疑的
C. dying垂死的
D. extraordinary不平常的
Which one is correct to express the meaning with the affirmative form?
A. incomplete 不完全的
B. unprecedented 前所未有的
C. dislike 反感，讨厌
D. disbelief 不相信
Which one is not translated from negative English to affirmative Chinese?
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。
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