问答题

Additional social stresses may also occur because of the population explosion or problems arising from mass migration movements-themselves made relatively easy nowadays by modem means of transport.

【参考答案】

由于人口猛增或大量人口流动，现代交通工具使大量人口流动变得相对容易，所引起的各种问题也会对社会造成新的压力。

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1.Many of us find it hard to say NO to a friend. 2. Do not hesitate to say NO. 3. Skills of saying NO at the same time not hurting feelings.

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