备考2021年高考英语一轮复习04：连词
年级： 学科： 类型： 来源：91题库
一、单选题（共30小题）
1、Why do you want a new job ______ you've got such a good one already?
A . that
B . where
C . which
D . when
2、— Why didn't you help the little boy?
—Oh, he had struggled to his feet ______ I could run over and offered any help.
A . before
B . after
C . when
D . since
3、 some leaders and scientists have praised China's achievement in space technology, others regard China's progress as a threat.
A . Unless
B . Once
C . Even though
D . Now that
4、Tom is so independent that he never asks his parents' opinion _________ he wants their support.
A . since
B . once
C . unless
D . after
5、________ gravity holds things together, some unknown ________ is working across the universe to pull everything apart.
A . While; force
B . When; power
C . As; energy
D . Since; strength
6、Follow your doctor's advice, _____ your cough will get worse.
A . or
B . and
C . then
D . so
7、—Will you go to the picnic tomorrow?
—Not my dear dog is allowed to accompany me.
A . if
B . until
C . unless
D . when
8、Anderson made the announcement at the conference the company would be closing.
A . that
B . when
C . where
D . whether
9、I am not afraid of tomorrow, I have seen yesterday and I love today.
A . so
B . and
C . for
D . but
10、Life is to be enjoyed. There is no point in giving up something you enjoy ________ you get something back that's even better.
A . because
B . so
C . unless
D . though
11、____hard a solid may be, we can change its shape.
A . Whatever
B . Whenever
C . However
D . Wherever
12、It sounds like something is wrong with the car's engine. ________, we'd better take it to the garage immediately.
A . Otherwise
B . If not
C . But for that
D . If so
13、Jenny feels a blankness ________ she once felt a sense of purpose and excitement.
A . unless
B . where
C . as
D . since
14、With the Entrance Exam approaching, I feel more and more stressed. It will ruin my college dream _____ I take action now as soon as possible.
A . since
B . once
C . until
D . unless
15、— I am going to Hainan for my holiday.
— OK. Have fun ________ you can. The hard times are approaching.
A . until
B . before
C . unless
D . while
16、______the damage is done, it will take many years for the farmland to recover.
A . Until
B . Unless
C . Once
D . Although
17、 online shopping has changed our life, not all of its effects have been positive.
A . Since
B . After
C . While
D . Unless
18、______the sales figure of the new range of products is relatively small, the potential market is large.
A . Unless
B . After
C . Since
D . While
19、You can phone your friend at work _____ you don't make a habit of it.
A . as if
B . even though
C . as long as
D . in case
20、Our core interests will be better safeguarded ________ CNS Shandong, China's second aircraft earner, is in service.
A . as though
B . if only
C . even if
D . now that
21、Just underwater grass floats on the surface if it loses its roots, a nation is lost without its memories.
A . since
B . while
C . as
D . when
22、________ I say Clancy is a smart boy, he still needs to work hard to achieve his goal.
A . If
B . When
C . As
D . While
23、The girl thought her boyfriend had bought her a necklace of great value ________ in fact it was made of glass.
A . when
B . while
C . that
D . as
24、All the photographs in this book, __________ stated otherwise, date from the 1950s.
A . if
B . when
C . which
D . unless
25、Jack was working in the lab __________ the power cut occurred.
A . suddenly
B . which
C . while
D . when
26、There's no way of knowing why one man makes an important discovery __________ another man, also intelligent, fails.
A . while
B . when
C . where
D . why
27、—Hi, darling, what's the matter?
—Well, I wasn't feeling well this morning and I was having breakfast ______ a wave of nausea (恶心)________ me. And then I passed out.
A . before; came over
B . when; came over
C . before; pulled over
D . when; pulled over
28、Just as the builder is skilled in the handling of his bricks, _______ the experienced writer is skilled in the handling of his words.
A . as
B . so
C . thus
D . like
29、—Mr. Robert, I'd like to take a gap year to volunteer for a global anti-Aids campaign.
—That's great, ________ you can afford the time.
A . provided that
B . in case
C . even if
D . so that
30、The sun is bigger than the moon , ___ we all know it.
A . and
B . as
C . which
D . it