请用括号里词组或单词我们现在努力学习的目的就是在将来为国家贡献一份力量.（aim at）所有的参考书只能在阅览室里看,不

请用括号里词组或单词
我们现在努力学习的目的就是在将来为国家贡献一份力量.（aim at）
所有的参考书只能在阅览室里看,不能带出去.（available）
据信这架飞机已在那个小岛上安全着路.（believe）
如果我们对自己的缺点视而不见,就不可能进步.（blind）
大量的砍树和使用杀虫剂肯定会扰乱生态平衡.（certain）
为了弄清楚每个学生的不同需要,林老师利用整个暑假进行家访.（clear picture）
我很高兴有机会用英语与外国人交流.（communicate）
许多市民向市长抱怨上下班时间交通堵塞.（complain）
与人们预料的相反,那所大学女学生的比例正在下降.（contrary）
短暂的犹豫便使他失去了赢得奥运金牌的机会.（cost）

1. We aim at serving our country in the future with hard study today.
2. All reference books are only available in the reading room and can't be taken out.
3. It is believed that the plane has landed on that small island safely.
4. If we are blind to our own shortcomings, we can never improve.
5. It is certain that massive tree felling and excessive use of pesticide will break the ecological balance.
6. To have a clear picture of every student's needs, Teacher Lin spent the whole summer vacation visiting their homes.
7. I'm very glad to have this opportunity to communicate with foreigners in English.
8. Many residents have complained to the mayor about traffic congestions in rush hours.
9. Contrary to many people's expectations, the proportion/ratio of female students in that university is dropping.
10. A moment of hesitation cost him the Olympic gold (medal).
绝对精品翻译,请放心采用.