Scientists are not sure how serious the effects of global warming will be.A.RightB.WrongC.
Scientists are not sure how serious the effects of global warming will be.
A.Right
B.Wrong
C.Not mentioned
Scientists are not sure how serious the effects of global warming will be.
A.Right
B.Wrong
C.Not mentioned
What's the attitude scientists toward atomic bomb? ______.
A.Pleased
B.Worried
C.Disapproved
D.Not mentioned
Very few scientists ______ completely new answers to the world's problems.
A.come up with
B.come out
C.come round
D.come up to
Very few scientists ______ with completely new answers to the world's problems.
A.come to
B.come around
C.come up
D.come in
A.support
B.elevate
C.investigate
D.challenge
What's the author's attitude shown in the passage?
A.Supportive to the scientists' research.
B.Opposed to the lead pollution.
C.Just descriptive of an on-going fact.
D.Positive to the prospect of the solution of lead pollution.
Scientists will()new methods of increasing the world's food supply
A、set aside
B、go over
C、turn up
D、come up with
"Speculation is science's very life-blood" means that scientists ______.
A.are gamblers on science
B.must form. opinions about the data they gather
C.must concern themselves with provable facts
D.must understand all sciences
What did P and S waves help scientists discover about the layers of the earth?
A.How deep they are.
B.Where earthquakes form.
C.How hot they are.
D.What purpose they serve.
The passage probably implies that scientists have been______.
A.slow to respond to the government's proposals
B.overlooked for the sake of a flawed reform. plan
C.good at following the government's example
D.indifferent to some governmental demands
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