______ people have become masters of their country ____ science can really serve the people.
A.It is only then ;that B.It is that;when
C.It is only when; that D.It is when;when
The government is trying to reduce people’s fear _________ they are likely to be affected by the nuclear radiation.
A. whether B.what C.that D.how
Their house ______ mine in having no garage.
A.different from B.differs from C.differs D. differs with
I _______ my success to my family’s support.
A.devote B.contribute C.refer D.owe
It is _________ pleasant to take a crowded bus.
A.by no means B.by means of C.by all means D.by any means
It is uncertain _______ side effect the medicine will bring about,although about two thousand patients have taken it.
A. that B. what C.how D.whether
