The survival of civilization, as we know, is()threat.
A. within
B. under
C. towards
D. upon
查看答案
Very few plants will()without water.
A. flourish
B. fade
C. stem
D. cultivate
The police will give you a ticket if you()the speed limit.
A. break
B. reject
C. suspend
D. exceed
I bought a washing-machine and asked to have it sent to my house. The manager of the store promised to make a prompt()
A. delivery
B. relay
C. supply
D. transport
They are two dollars each but if you buy ten, you get a()of ten per cent.
A. discount
B. recession
C. depression
D. discharge