Let's learn to use the problem we are facing         a stepping-stone to future success.

to

for

as

by

考查介词词义辨析。句意：让我们学会把我们所面对的问题作为通向未来成功的手段来利用。A.to朝，对 ；B.for 为了，对于；C.as 作为；D.by通过，凭借。根据句意可知，此处“作为”符合语境。故选C项。

The black teacher set a good example ____ all the rest of the group, _____ all peace-loving people.

to, who are

for, which was

to, which are

to, who were

[翻译]黑人教师给其他所有爱好和平的人树立了一个好榜样。[解析] D 解析：set an example to表示给某人树榜样，由此可以排除B;因先行词指人，故使用who引导非限定性定语从句，由此可以排除C; 根据时态的一致原则可知，此处应当使用一般过去时，故正确答案为D项。

          is a pity           you didn't attend the lecture last night. It was wonderful.

What; that

It; that

What; why

It; why

考查固定句型。句意：很遗憾，你昨晚没去听讲座。那太美妙了。此处为句型“It is a pity that.....”，表示“遗憾的是....", It 作形式主语，that 引导主语从句是真正的主语，从句句意完整，成分齐全，that不做成分，仅起引导作用。故选B项。

Small sailboats can easily turn over in the water ________.

if not managed carefully

if are not managed carefully

unless not managed carefully

unless are not managed carefully

I_____you can finish the exam in two hours.

does believe

do believe

did believed

do believed

句意：---我确实相信两个小时内能完成考试。这里用来强调，在谓语动词前加助动词do表示强调。句子的主语是第一人称，所以位于动词不能用单数，故排除A；did后用动词原形；do后用动词原形，故选B。

Don't forget            the letter for me when you pass  by the post office.

post

to post

posted

posting

考查不定式作宾语。句意：你经过邮局时别忘了替我寄这封信。forget to do sth忘记要做某事；forget doing sth 忘记做过某事。根据句意表示事情已经发生。故选B项。

Based on the agreement,all payments          be made by the end of the month.

may

can

shall

will

考查情态动词。句意：根据协议，所有款项应在月底付清。shall用于法律，条款中表示必须要做的事。故选C项。

It is said that railway station is now         large as What it was.

as twice

twice as

twice much

much twice

考查倍数表达法。句意：据说火车站现在是原来的两倍大。倍数的基本结构一般为“A+倍数+as+形容词或副词的原级+as+B”，表示“A正好是B的多少倍”。联系下文large as，此处用twice as large as 表示“是.....的两倍大”。故选B项。

---It's burning hot today,isn't it?

---Yes,_____yesterday.

So was it

So it was

So it is

So is it

句意：“今天太热了，是不是？”“是呀，昨天也一样”。如果表示前面所说的肯定情况也适合于另一者，要用“so+助动词/情态动词/系动词+主语”。