题目内容
（请给出正确答案）
"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
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更多“"Speculation is science's very…”相关的问题
This text is mainly about__________． 查看材料
A.the scientific leadership of the U．S．
B.the shortage of scientists in the U．S．
C.the rapid globalization of science
D.better communication and globalization
A.speculation
B.speculator
C.speculate
D.speculative
A.than
B.no other than
C.rather than
D.no more than
此处正确答案是 [A]contribution[B]deduction[C]contemplation[D]speculation
A．They will change their attitude to science.
B．They will be more sympathetic with science and understand the work done by scientists.
C．They will certainly become scientists as they hope to.
D．It will bring about good reading and learning.
Among the reasons for the Crash of 1929 were ______.
A．unwise speculation by many people
B．dishonest practices by some businessmen
C．strict regulations of the Commodity Exchange Commission
D．both A and B
There is speculation that Mr. Bush would eventually repay all the national debts in his term.
A．正确
B．错误
