一、选择题
1．Now most families have only one child _____ our country’s one-child policy.
A．so B．because C．because for D．because of
2．________ haburgers are junk food, many children still like them.
A．If B．Unless C．Because D．Although
3．You can stay healthy________you exercise every day.
A．as long as B．so C．as soon as
4．I still have difficulty ________the article________ there are few new words in it.
A．to understand; because B．understand ; though C．understanding ; if D．understanding ; though
5．It’s________a difficult question that few of us can answer it.
A．quite B．so C．such D．very
6．I don’t like nuts ________ they are too hard.
A．if B．after C．when D．because
7．I can’t understand that the woman often complains_______she has got a well-paid job and a happy family.
A．whenever B．since C．until D．though
8．—I’m afraid I can’t finish the job in such a short time.
—Don’t worry. Can you do it if you_______ two more hours.?
A．give B．are given C．will give D．will be given 9．— What shall we do now?
— __________ it’s raining hard, let’s stay at home.
A．So B．Since C．Though D．Otherwise 10．—Mum, will our trip be cancelled?
—No, we won’t put it off________there is a natural disaster.
A．if B．whether C．unless D．when
11．I don’t like science _______it’s difficult.
A．but B．so C．because
12．The lady was _____ happy _____she couldn't say a word when she heard the good news.（）
A．too; to B．very; because
C．so;that
13．—Mom, I’m leaving for Beijing tomorrow.
—That’s nice. You’d better ring me up________you get there.
A．as soon as B．until C．while
14．—It’s raining heavily outside.
—So stay here and don’t go out ______ it stops.
A．when B．until C．if
15．I felt very happy, ___________ I didn't win the singing competition.
A．though B．if C．so D．because
16．________ you've tasted them, you can't imagine how delicious the dishes are. A．Because B．Although C．Unless D．So
17．Amy was reading a novel________the teacher came in.
A．while B．if C．when
18．Tim is ______ his twin brother. They are both 180 centimeters tall.
A．taller than B．shorter than C．as tall as D．not so tall as 19．— When shall we start?
—Let’s wait ________ the rain stops.
A．if B．as C．until D．since
20．You can’t watch TV ________ you finish your homework.
A．after B．if C．when D．until
21．I can’t drive my father’s car ________I get my driving license.
A．unless B．because C．if D．since
22．I didn't accept his help ________ I wanted to try it myself.
A．because B．though
C．until D．unless
23．—Why do you sell old books?
—I sell them________ raise some money for the poor students.
A．in order that B．in order to C．so that D．because of 24．—How are you going to spend this weekend?
—_________ the weather is fine, we’ll climb Mount Tai.
A．As well as B．As good as C．As soon as D．As long as 25．________ they are sisters, they don’t look the same.
A．Though B．Because C．But
【参考答案】***试卷处理标记，请不要删除
一、选择题
1．D
解析：D
【解析】
【分析】
【详解】
句意：由于我们国家的独生子女政策，现在大多数家庭只有一个孩子。
so 所以；because 因为，引导原因状语从句；because for 不符合英语表达习惯；because of
