One way for students to prevent H7N9 flu virus is to open the windows of the classroom to allow the air to ________.
#13540
A
accumulate
B
circulate
C
illustrate
D
accelerate
推荐题目
-- Can you lend me the book Twilight by Stephenie Meyer?-- Sorry. I returned it to the library just now. Maybe it is still _____.
#14016
A
available
B
affordable
C
acceptable
D
valuable
---Can I help you, madam?---I’d like to buy ____eggs.
#14346
A
scores of
B
two scores of
C
two dozens of
D
three scores of
The beautiful song ________ me of those happy old days we had spent together.
#10850
A
repeated
B
remembered
C
informed
D
reminded
All those second-hand cars are sold at before
#13580
A
40％as lower price as
B
40％as low a price as
C
as 40％low price as
D
40％lower price than
Chinese government should ______ taking action at once to defend the Diaoyu Islands.
#12538
A
set about
B
set off
C
set out
D
set down