1. Starting with the ________ that there is life on the planet Mars, the scientist

went on to develop his argument.

A) premise

B) pretext

C) foundation

D) presentation 

2. After several nuclear disasters, a ________ has raged over the safety of nuclear energy.

A) quarrel

B) suspicion

C) verdict

D) controversy 

3. Their diplomatic principles completely laid bare their ________ for world conquest.

A) admiration

B) ambition

C) administration

D)orientation

4. The director gave me his ________ that he would double my pay if I did my job well.

A) warrant

B) obligation

C) assurance

D) certainty 

5. The Christmas tree was decorated with shining ________ such as colored lights and glass balls.

A) ornaments

B) luxuries

C) exhibits

D) complements 

1. A 参考译文：以火星上有生命存在这一假设开始，那位科学家继续进行论证。

A) premise 前提

B) pretext 借口

C) foundation 基础

D) presentation 陈述

2. D 参考译文：发生几次核灾难之后，关于核能安全的问题引起了一场激烈的争论。

A) quarrel 争吵

B) suspicion 怀疑

C) verdict 判决

D) controversy 争议

3. B 参考译文：他们的外交原则完全暴露了他们要征服世界的野心。

A) admiration 羡慕

B) ambition 野心

C) administration 管理

D)orientation 定向

4. C 参考译文：主任向我保证，如果我工作干得好，他就会给我双倍的工资。

A) warrant 证明

B) obligation 责任

C) assurance 确信

D) certainty 明确

5. A 参考译文：圣诞树上点缀着闪光的饰物，如彩灯和玻璃球。

A) ornament 装饰

B) luxury 奢侈的

C) exhibit 展览

D) complement 补充