Carbon dioxide, which makes a ______ between us and the sun, prevents heat from getting out of the atmosphere easily, so the earth is becoming warmer.
#13856
A
difference
B
comparison
C
connection
D
barrier
推荐题目
You had better drink this , for it _______ vitamin C and it is good to your health.
#12449
A
includes
B
including
C
contains
D
containing
— Is it true that Jack _______?—Exactly. He damaged a very expensive machine.
#13814
A
got fired
B
got a fire
C
get fired
D
fired
He decided to adopt a different ___________ to teaching the language.
#12537
A
method
B
means
C
way
D
approach