(2013·福建毕业班质量检查)—What does PM 2.5 mean?—It's a professional ________ indicating the condition of air pollution.
#11739
A
term
B
item
C
number
D
mark
推荐题目
(2011·四川高考)Lydia doesn't feel like______abroad.Her parents are old.
#11368
A
study
B
studying
C
studied
D
to study
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
The college ______ 7 departments, 4 institutes, and Teaching Division of Basic Computer Science and Basic Lab Center.
#12952
A
consists of
B
makes up of
C
is consisted of
D
is made of
The boy went in _______ when he left for school that he left his key inside the house.
#12515
A
a rush so anxious
B
a such anxious rush
C
so an anxious rush
D
such an anxious rush