问答题

科学给我们的生活带来了许多变化。

【参考答案】

Science has brought about many changes in our lives.
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单项选择题
Why is it difficult to predict the possible effects of electromagnetic fields on an airplane’s computers
A．Because it remains a mystery what wavelengths are liable to be interfered with.
B．Because it is extremely dangerous to conduct such research on an airplane.
C．Because research scientists have not been able to produce the same effects in labs.
D．Because experts lack adequate equipment to do such research.
问答题
如果你早一点告诉我，我就不会错过这个机会了。
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