2.The heating system here has an ______ temperature control.

2.The heating system here has an ______ temperature control.
A.aggressive
B.intentional
C.accidental
D.automatic
3.The gasoline ______ destroyed the company and injured many people.
A.explored
B.extended
C.expanded
D.explosion
4.To complete the task successfully,we have to get well prepared ______.
A.in advance
B.in detail
C.in turn
D.in force
5.Only two people survived the fire that ______ at midnight.
A.broke out
B.broke off
C.broke up
D.broke down
6.It is nice to travel with ______ paid by your boss,at no cost to yourself.
A.prices
B.costs
C.offers
D.activities
7.The policeman went from house to house,______ whether anyone had seen the lost boy.
A.asking
B.interrupting
C.informing
D.introducing
8.On our trip out of the country we visited ______ in England.
A.relationship
B.relation
C.relatives
D.person
9.Theory couldn't do without practice,_______ without theory.
A.practice could do either
B.neither practice could do
C.practice could do neither
D.nor could practice do
10.I _______ the truth of your remarks,although they go against my interests.
A.cannot but admit
B.cannot but to admit
C.cannot but admitting
D.cannot help but admitting
11.She hardly ever eats _______ potatoes.
A.every bread or
B.bread or
C.neither bread or
D.neither bread nor
12.That's the hotel _______ last year.
A.which we stayed
B.that we stayed
C.for which we stayed
D.where we stayed
13.We often advise him not to drink more wine _______ is good for his health.
A.as
B.that
C.than
D.but
14."Why does Dr.Takin prefer his office?"
"Because here he is free to do his research _______ he wants."
A.some way
B.anyhow
C.anyway
D.whatever
15.I have never dined with you,sir; and I see no reason _______.
A.how should I now
B.how I should now
C.why should I now
D.why I should now
16.Advertising is different from other forms of communication _______ the advertiser pays for the message to be delivered.
A.in which
B.in this way
C.in that
D.in order that
17._______ electric wires are made from lead is common practice.
A.What
B.Whether
C.That
D.How
18.Unemployment in some large cities was _______ problem that the government had to provide free grain for many of the poor people.
A.so a serious
B.a such serious
C.a so serious
D.such a serious
19.No matter _______ they added to their knowledge and abilities,the old professor was never satisfied.
A.what many
B.how many
C.what much
D.how much
20.They didn't break the bad news to his mother _______ that she might break down.
A.unless
B.for
C.because
D.for fear

2 D 自动的
3 D gasoline explosion 爆炸
4 A in advance 事先
5 A break out 逃出
6 C offer paid 有偿要约
7 A asking 询问
8 C relatives 亲戚们
9 D nor could practice do 实践也不能
10 A cannot but 后面跟动词原形
11 B hardly 表示几乎没有,否定,后面用肯定
12 A which we stayed 那幢我们呆的
13 A as 因为
14 D whatever 不管什么
15 D why i shoud 同位语
16 A in which 某种方式
17 C that 引导定语从句
18 D such a large 其他都不对
19 D how much 修饰单数
20 D for 引导原因状语