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(4)、 [单选题] （2.0分）What does Professor David Reay try to argue?

A. There are far more emissions from cars than from microwaves.
B. People should be persuaded into using passenger cars less often.
C. The UK produces less CO2 than many other countries in the EU.
D. More data are needed to show whether microwaves are harmful.

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(5)、 [单选题] （2.0分）What does Professor David Reay think of the use of microwaves?

A. It will become less popular in the coming decades.
B. It makes everyday cooking much more convenient.
C. It plays a positive role in environmental protection.
D. It consumes more power than conventional cooking.

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(4)、 [单选题] （2.0分）What does Professor David Reay try to argue?

A. There are far more emissions from cars than from microwaves. B. People should be persuaded into using passenger cars less often. C. The UK produces less CO2 than many other countries in the EU. D. More data are needed to show whether microwaves are harmful.

(5)、 [单选题] （2.0分）What does Professor David Reay think of the use of microwaves?

Python通过(),来区分不同的语句块。

已知a=3,b=5,c=6,d=True,则表达式 not d or a>=0 and a+c>b+3的值为()。

对于if语句的条件表达式后面或else后面的语句块,应将它们【1】。(提示:答案填4个字)

A. There are far more emissions from cars than from microwaves.
B. People should be persuaded into using passenger cars less often.
C. The UK produces less CO2 than many other countries in the EU.
D. More data are needed to show whether microwaves are harmful.