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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The life of a professional tennis player is tough ________ you never seem completely free to do _______ you like --- even in the off-season.
#31384
A
when; what
B
because; that
C
as; whatever
D
when; whatever
Mr. White in Los Angeles for years, but presently he has already adapted to living in Miami．
#32283
A
lived
B
had lived
C
has lived
D
was living
Information technology is taught in most schools，________ we have entered the information era.
#30468
A
so
B
while
C
for
D
still
They were surprised that a child should work out the problem____ they themselves could not.
#31497
A
once
B
unless
C
while
D
if
If you are able to talk to a friend over the telephone, you feel that you are close ______ the actual distance is not shortened.
#31035
A
even if
B
so long as
C
if
D
as