22．Lawrence Craven, a doctor from the USA，is the author of several published reports, one of______ introduced the idea in 1953 ______aspirin could reduce the risk of heart attacks．
#79598
A
them; when
B
which; that
C
what; that
D
which; when
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______ you are supposed to do ______ you don't like a thing is ______ it. Don't complain.
#30517
A
That; what; change
B
When; that; to change
C
What; when; change
D
What; that; changing
Newspapers, radios, the Internet can often help to solve problems by _____ attention to situations _____ help is really needed.
#34371
A
taking; which
B
drawing; where
C
paying; that
D
attracting; /
---May I borrow your book Steve Jobs ? --- ________ you return it before Friday.
#30658
A
If only
B
Unless
C
On condition that
D
Now that
How can you expect to learn anything _____ you never listen?
#31297
A
in case
B
even if
C
unless
D
when