单项选择题

Science at the present time is often applied to ______.

A．boost production of grain
B．construct first-rate transportation system
C．turn out sophisticated weapons used for mass killing in war
D．turn desert into fertile land
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单项选择题
The author's own attitude to the solution of the problem can be best described as ______.
A．pessimistic
B．realistic
C．conflicting
D．doubtful
单项选择题
By transferring some or all of the money spent on preparation for war to peaceful purposes, all of the following benefits would occur EXCEPT that ______.
A．transporting necessities of life could become much easier than ever before
B．people could have more access to education and become more knowledgeable and trustworthy
C．the world could witness economic well-being never imagined before
D．the seed of hatred could no longer be sown in schools to the heart of younger generation
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