Chinese scientists have produced an embryo of a giant panda through cloning technology,_____ is a breakthrough ______ could save the endangered animals.
#67247
A
that; which
B
which; that
C
which; what
D
that; what
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It is such a modern machine ______ few of the workers know how to operate.
#71962
A
as
B
which
C
that
D
the one
Stephen Hawking believes that the earth is unlikely to be the only planet _life has developed gradually.
#68503
A
that
B
where
C
which
D
whose
There is a common belief among them _______rubbish can and should be put to good use .
#73034
A
which
B
if
C
whose
D
that
“My boy, do remember to leave things _____ you can find them again.
#67732
A
where
B
when
C
then
D
there