全新版大学英语(第二版)综合教程4课后答案

Unit2

1.Before Anglo-American westward expansion, there were already a number of settlements in the mid-west. 在英美向西扩张,在中西部已经有一些定居点。

2. We are confident that the introduction an automated assembly line will eliminate most of today’s human errors. 我们有信心,引进自动装配生产线将消除今天的大多数人为错误。

3. Warmer air is able to hold more water vapor than cold air and so has a higher humidity. 温暖的空气可以容纳更多的水蒸汽比冷空气,因此具有较高的湿度。4. In most communities in the United States, The local American red cross chapter has been authorized to take control of certain local public building in times of emergency. 在大多数社区在美国,美国红十字会已被授权在紧急情况下采取控制某些地方的公共建筑。

5. Traffic control establishes a set of rules and instructions that drivers, pilots, train engineers, and ship captains rely on to avoid collisions and other hazards. 流量控制建立一套规则和指令,司机,飞行员,火车工程师,和船长的依赖,以避免碰撞和其他危险

6. In the past few decades since the launching of the first satellite artificial satellite in 1957, thousands of "man-made moons" have been rocketed into the Earth's orbit, each designed to serve a specific purpose or mission. 人造地球卫星的第一颗人造地球卫星于1957年开通以来,在过去的几十年里,成千上万的“人造月亮”已飙升到地球轨道,每个服务一个特定的目的或任务。

7. The thunder crashed so near the house that the glass vibrated in the windows, and some books, which had sat on the windowsill, fell to the floor. 雷声坠毁附近的房子,在窗户的玻璃振动,和一些书籍,在窗台上已经坐了,倒在地上。

8. Radio telescopes have provided valuable information about other stars and about the magnetic fields of other planets in our solar system, especially Jupiter's. 关于其他恒星的磁场在我们的太阳系其他行星,特别是木星的射电望远镜提供了宝贵的信息。

9. At the beginning of the race, the runners were bunched together on the track, but later some of them got ahead and left the others behind.

10. From the control tower, air traffic controllers coordinate in the air aircraft movement both in the air and on the ground.

11. Further troubles developed in October in 1995 when the tape recorder in the orbiter Galileo got stuck in the “rewind" position for 15 hours, wearing out a section of the tape.

12. In 1978, at the beginning of the reform period, approximately 11,000 Chinese students went abroad to pursue further studies.

Unit 3

1. The waitress was so rude that Jane didn't tip her.

2. Racing takes everything you‘ve got----intellectually, emotionally, and physically.

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