The air ______ different gases _____ together.
#67407
A
consist of, mixing
B
is made up of, mixed
C
consisting of, mixed
D
makes up, mixing
推荐题目
The boss has ________to improve the working conditions in the company.
#67411
A
allowed
B
accepted
C
permitted
D
agreed
. After many years’ hard work, his career really _____ and he became world famous.
#78436
A
took on
B
took off
C
took up
D
took away
With the help of high technology, more and more new substances ______ in the past 10 years.
#71929
A
discovered
B
have discovered
C
had been discovered
D
have been discovered
He is no longer in good condition, and his ability to work is limited. I ____________ him to give up the job but failed.
#65138
A
suggested
B
persuaded
C
tried to persuade
D
managed
Many citizens urged their government to take measures to _______ their carbon emission to reduce greenhouse effects.
#65407
A
cut off
B
cut up
C
cut out
D
cut down