Question

阅读理解

Information from the pioneer spacecraft of the National Aeronautics and Space Administration (NASA) obviously proves the theory that the burning 900-degree Fahrenheit surface temperature of Venus (金星) is due to an atmospheric greenhouse effect caused mainly by a blanket of carbon dioxide. Such a greenhouse effect is created when energy in the form of sunlight easily passes through a planet’s atmosphere, warms is surface, and becomes heat radiation that is then held in by the atmosphere. The orbiting spacecraft has collected Venus’s atmosphere from top to bottom so that NASA’s scientists are able to prove the exact amount of sunlight received at various places in the planet’s atmosphere and on its surface. Measurements of atmosphere, temperature, and radiative heating foresee Venus’s surface temperature very exactly. The planet is closer to the Sun than it is to the Earth, and it has a thin atmosphere like the Earth’s but Venus atmosphere is made up of more than ninety percent carbon dioxide, compared to less than four percent in that of the Earth. Because of its higher percentage of carbon dioxide, Venus’s atmosphere receives much more heat radiation than the Earth’s does. Thus the Venus studies are believed to be important to the understanding of possible bad effects on Earth’s agriculture and sea levels that could result from the long-term use of fuels, which add carbon dioxide to the atmosphere．

Notes

1. atmospheric adj．大气(中)的

2. carbon dioxide 二氧化碳

3．orbit vt.使(人造卫星、宇宙飞船等)进入空间轨道；绕轨道运行

4．amount n．总数，总额

5．compare vt．把……比作(to)

1．Which of the following would be the most suitable title for the passage?

A．A New Theory

B．Measuring Planetary Temperatures

C．The Journey of Pioneer Spacecraft

D．The Greenhouse Effect on Venus

2．According to the passage, what happens to heat radiation on Venus?

A．It disappears at the planet’s surface．

B．It is received by the atmosphere．

C．It creates energy．

D．It is changed into other kind of energy．

 (丢失三道题)

 

Answer 1

答案：1D2B3A4D5B
解析：

1．D本文谈到了宇宙探测器对金星探测的一些情况，从而了解到金星也存在着温室效应，故选D。 2．B文章第二句已说明金星大气层吸收了热辐射。 3．A  从“The planet is closer…but Venus atmosphere is made up of more than…，comparedお to…of the Earth”可以看出，金星大气层中二氧化碳的含量要比地球大气层中的二氧化碳的含量高许多。 4．D 温室效应的后果是地球的气温发生了变化。 5．B 通过对金星的确定，人们可以从中获得一些有用的信息来预报地球上农业生产可能会出现的问题。