1-4题原文中有答案，第5题归纳概括一下即可。
1.they think their children can get a wider view, less academic competition or family honor.
2.at first, they have to face the culture differences and language problems
3.his teachers there seldom push students to study hard.
4.so parents should think them over before their children go abroad.
5.the benefits and drawbacks to study abroad.
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