参考答案： D

TIP：本句考查了动词省略的用法，当从句动词与主句动词相同时，可用do代替。

28. The central provinces have floods in some years, and ____. A. drought in others B. droughts are others C. while other droughts D. others in drought

参考答案： A TIP：本句考查了平行结构的用法。And之后的半句要与floods in some years平行，且drought在作“干旱”讲时为不可数名词。

29. It is futile to discuss the matter further, because ____ going to agree upon anything today. A. neither you nor I are B. neither you nor I am C. neither you nor me is D. neither you nor me are

参考答案： B

TIP：本句考查了并列主语的主谓一致。而由neither ? nor ?引导的并列主语，谓语遵循就近原则。本句译为：再就这个问题讨论下去是徒劳无益的，因为今天你我不会达成任何一致意见。

30. She managed to save ____ she could out of her wages to help her brother. A. how little money B. so little money C. such little money D. what little money

参考答案： D

TIP：这里选what做关系形容词，作定语，表示“所??的”。本句意为：她尽可能地从自己的工资里省下一些钱来帮助她的弟弟。