______ there are living creatures in the outer space as those on Earth hasn’t been proved so far.
#13957
A
When
B
How
C
If
D
Whether
推荐题目
Professor Li’s health was completely___________ by ten years of hard work.
#12654
A
hurt
B
injured
C
ruined
D
damaged
Stella was disappointed to find her new plan and fell into great depression.
#12616
A
put away
B
carried out
C
turned down
D
left out
Young people may risk ________ deaf if they are exposed to very loud music every day.
#13845
A
to go
B
to have gone
C
going
D
having gone
(2009·陕西高考)I still remember________to the Famen Temple and what I saw there.
#11367
A
to take
B
to be taken
C
taking
D
being taken
New computers are soon out of date since newer models are ________ constantly.
#11385
A
turned up
B
turned out
C
turned down
D
turned over