—What does PM 2.5 mean?—It's a professional ________ indicating the condition of air pollution.
#11329
A
term
B
item
C
number
D
mark
推荐题目
(2013·东北三校一模)The police managed to gain ________ through an upstairs window.
#11343
A
approach
B
way
C
access
D
passage
A good student is honest and kind to others. In other words, he never ______ his friends.
#14251
A
helps
B
laughs
C
betrays
D
blames
It is reported that the scientists in our country are_______all possible way to control H7N9 flu.
#12027
A
operating
B
solving
C
exploding
D
exploring
Everybody in the village likes Jack because he is good at telling and________ jokes.
#13384
A
turning up
B
taking up
C
making up
D
showing up