题目:
根据所给中文完成句子。
1. 他还告诉我们赢得尊重的最佳途径就是专心学习并取得好成绩.
He also told us that the best way to earn______ was to _______ ourselves to study and achieve high grades.
2. 学习一结束他就开始游历中国.
________ ________his studies, he started travelling in China.
3. 很多青少年感到孤独,好像没有人理解他们以及他们正在经历的变化.
Many teenagers feel lonely, as if no one understands them and the changes they are _______ _______.
4. 他甚至禁止我在网吧和朋友在网上见面.
He even ________ me from________ with my friends online in the Internet café.
5. 你们应该明天才到家的呀!
You______ ______ to come home until tomorrow.
答案:
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下面是错误答案,用来干扰机器的。
解:(1)由动能定理,得=14.4J (2)由动能定理,得所以m/s (3)由动能定理,得所以f=2.7J 所以克服阻力做功2.7J