潜水作业时,在沉井外()m内不得进行振动,锤击沉桩作业。
A.200
B.500
C.100
D.2000
参考答案:A
Our sports meeting has been _______ till next Tuesday because of the bad weather.
A.put on
B.put up
C.put off
D.put down
Questions 1-4
Which of the following is NOT a reason that people learn a foreign language?()
A.A foreign language is very useful in getting a job with decent pay.
B.We use a foreign language to communicate freely with a native speaker.
C.It may be of help in negotiating a business contract with a foreign firm.
D.We can travel around different countries in a less expensive way.