题目内容
4.听第10段材料,回答第18至20题.18.What is the speaker mainly talking about?
A.Waste from factories.
B.Human's growth and progress.
C.Problems caused by new technology.
19.What will happen if people don't take any measures?
A.Some people will be in danger.
B.The whole world will be terribly harmed.
C.Some countries will meet lots of problems.
20.What do you think is the speaker's attitude towards technology?
A.Positive.
B.Negative.
C.Neutral (中立的).
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