1.The computer of this kind can work ______ than the one of that kind.

　　A.hundred of times faster B.a hundred time faster C.hundred times faster D.hundreds of times faster

　　2.When I was young，my grandmother told me that the earth ______ round.

　　A.is B.was C.has been D.had been

　　3.—Do you know Jack well?—Certainly.We ______ friends since ten years ago.

　　A.were B.have made C.have become D.have been

　　4.These hamburgers ______ nice，so they have all ______ out.

　　A.taste，sell B.are tasted，sell C.taste，been sold D.are tasted，been sold

　　5.We now have ______ fast ways of traveling that this big ocean seems to have grown smaller.A.so B.such C.so a D.such a

　　6.I do not wish to ______ your sincerity.

　　A.reflect B.reflect on C.reflect in D.reflect about

　　7.The smog is due ______ invisible gases，mostly from automobile exhaust.

　　A.from B.to C.for D.with

　　8.______ is accepted as true is relatively，and not absolutely，true.

　　A.It B.That C.What D.That it

　　9.How can you keep the machine ______ when you‘re away?

　　A.run B.to run C.running D.being run

　　10.Because of his degree，he refused to do ______ he thought“low”work.

　　A.that B.what C.which D.who

　　11.She hasn‘t decided with ______ she should first make contact.

　　A.who B.whom C.how D.which

　　12.That is ______ we differ.

　　A.that B.where C.what D.whether

　　13.Another worry is that telecommunication systems may isolate people ______ each other.

　　A.from B.for C.with D.to

　　14.If I ______ in your place，I wouldn‘t trouble him.

　　A.were B.had been C.could be D.was to be

　　15._______ the moon moves round the earth is well known to all of us.

　　A.That B.What C.When D.As

　　16.I doubt _______ they can complete the bridge ahead of time.

　　A.whether B.that C.why D.what

　　17.The question he asked was _______ I come here.

　　A.that B.how C.what D.because

　　18.Too many people are indifferent _______ others‘troubles.

　　A.with B.to C.of D.about

　　19.Let us see how dictionaries are made and how the editors _______ definitions.

　　A.lead to B.arrive at C.reach for D.approach to

　　20.Shanghai is the place _______ I was born.

　　A.on which B.in which C.when D.that

　　1.正确答案：D答案解析：表示“数百”、“数千”、“数百万”等不确切数目时，要用hundreds/thousands/millions of结构表示。D中hundreds of times意思是“数百倍”。答案为D.

　　2.正确答案：A答案解析：the earth is round是客观真理，所以不管句子其它部分用什么时态，这个句子都用一般现在时。

　　3.正确答案：D答案解析：根据句意可知应该用完成时，所以A答案错误。have been…表示状态，可以和表示一段时间的短语连用。have made和have become都是瞬间动词，不能和表示一段时间的短语连用。

　　4.正确答案：C答案解析：taste是系动词，taste nice构成系表结构，不用被动语态。但第二个空格处应该用被动语态，因为hamburgers与sell out之间是被动的关系。所以答案是C.

　　5.正确答案：B答案解析：such可以修饰可数名词单复数和不可数名词，名词前可以有形容词作定语，其结构是“such+a/an+形容词+可数名词单数”，“such+形容词+可数名词复数/不可数名词”。

　　6.正确答案：B答案解析：reflect on：思索，思考，有时表示“怀疑”。根据句意，应该选reflect on.

　　7.正确答案：B答案解析：due to是固定搭配，意思是：归因于，由于。

　　8.正确答案：C答案解析：本句中，what is accepted as true是主语从句，在句子中作主语。

　　9.正确答案：C答案解析：keep sb doing sth：使某人持续做某事。

　　10.正确答案：B答案解析：what在本句中引导do的宾语从句。

　　11.正确答案：B答案解析：with用于与make contact搭配。本题使用的短语是make contact with sb.whom在本句中引导的句子做介词with的宾语。由于位于介词后面，所以用宾格形式whom.

　　12.正确答案：B答案解析：where在本句中引导表语从句。句意：这就是我们的不同之所在。

　　13.正确答案：A答案解析：isolate sb/sth from sb/sth是固定搭配。

　　14.正确答案：A答案解析：本句是对现在的虚拟，所以条件状语从句用过去时。同时在虚拟语气中，一般不用was而一律用were，所以答案是A.

　　15.正确答案：A答案解析：本题的考点是：That引导的主语从句，注意that引导的主语从句在句中只起到连接作用，没有意义，也不做任何成分。

　　16.正确答案：A答案解析：doubt用在肯定句中，之后的宾语从句用whether或if引导。用在否定句中，后接宾语从句用that引导。

　　17.正确答案：B答案解析：这里表示的是：来的方式，要用how.

　　18.正确答案：B答案解析：indifferent，形容词，“漠然的、冷淡的”，常用indifferent to.

　　19.正确答案：B答案解析：本题考查词义辨析。arrive at：获得(结果);达到(目的)。

　　20.正确答案：B答案解析：出生在某地，要用介词in.此句话中，in which=where.