英语（语法）
1. The frequency of car accidents ____ the need of careful driving.
A. emphasizesB. engagesC. exploitsD. extends
2. Doing ____ jobs during the summer vacations is beneficial to the students.
A. lastingB. PermanentC. temporaryD. part
3. The lawyer advised him to drop the ____, since he stood little chance to win.
A. eventB. incident C. caseD. affair
4. The ____ stuck on the envelope says “By Air”.
A. diagramB. label C. signalD. mark
5. Shanghai is one of the important ____ and financial centers of the world.
A. effectiveB. economicC. economicalD. efficient
数学
政治（单项选择题）
列宁指出:“如果要开一张包治百病的药方，或者拟定一个适用于一切情况的一般准则那是很荒谬的。”其荒谬在于违背了( )
A.任何事物都包含矛盾的原理
B.不同的矛盾只能用不同的方法解决的原则
C.矛盾的普遍险存在于特殊性之中的原理
D.矛盾双方在一定条件下相互转化的原理
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