Question

The 2012 London Olympics had enough problems to worry about. But one more has just been added - a communications blackout caused by solar storms.

After a period of calm within the Sun, scientists have detected the signs of a flesh cycle of sunspots that could peak in 2012, just in time for the arrival of the Olympic torch in London.

Now scientists believe that this peak could result in vast solar explosions that could throw billions of tons of charged matter towards the Earth, causing strong solar storms that could jam the telecommunications satellites and interact links sending five Olympic broadcast from London.

"The Sun's activity has a strong influence on the Earth. The Olympics could be in the middle of the next solar maximum which could affect the functions of communications satellites," said Professor Richard Harrison, head of space physics at the Rutherford Appleton Laboratory in Oxfordshire. 

At the peak of the cycle, violent outbursts called coronal mass ejections (日冕物质抛射) occur in the Sun's atmosphere, throwing out great quantities of electrically-charged matter. " A coronal mass ejection can carry a billion tons of solar material into space at over a million    kilometres per hour. Such events can expose astronauts to a deadly amount, can disable satellites, cause power failures on Earth and disturb communications," Professor Harrison added. The risk is greatest during a solar maximum when there is the greatest number of sunspots.

Next week in America, NASA is scheduled to launch a satellite for monitoring solar activity called the Solar Dynamics Observatory (SDO), which will take images of the Sun that are 10 times clearer than the most advanced televisions available.

The Rutherford Appleton Laboratory helped to make the high-tech cameras that will capture images of the solar flares (太阳耀斑) and explosions as they occur.

Professor Richard Hold away, the lab's director, said that the SDO should be able to provide early warning of a solar flare or explosion big enough to affect satellite communications on Earth "If we have advance warning, we'll be able to reduce the damage. What you don't want is things switching off for a week with no idea of what's caused the problem," he said.

1.The phrase "communications blackout" in paragraph 1 most probably refers to          during the 2012 Olympics.

A．the extinguishing of the Olympic torch

B．the collapse of broadcasting systems

C．the transportation breakdown in London

D．the destruction of weather satellites

2.What can be inferred about the solar activity described in the passage?

A．The most fatal matter from the corona falls onto Earth.

B．The solar storm peak occurs in the middle of each cycle.

C．It takes several seconds for the charged matter to reach Earth.

D．The number of sunspots declines（减少） after coronal mass ejections.

3.What does the last sentence mean?

A．So far scientists still don’t know what caused the Solar Storms.

B．When Solar Storm happens, you’d better turn off the electrical appliances.

C．The risk is greatest during a solar maximum when there is the greatest number of sunspots.

D．Early warming can help minimize the harm of the Solar Storms.

4.According to the passage, NASA will launch a satellite to _  _ 

A．take images of the solar system

B．provide early warning of thunderstorms

C．keep track of solar activities

D．improve the communications on Earth

5.Which of the following might be the best title of the passage?

A．Solar Storms: An Invisible Killer

B．Solar Storms: Earth Environment in Danger

C．Solar Storms: Threatening the Human Race

D．Solar Storms: Human Activities to Be Troubled

 

Answer 1

【答案】

1.B

2.D

3.D

4.A

5.D

【解析】

试题分析：文章介绍2012年奥运会期间可能发生的太阳运动，会给奥运会的转播带来干扰。

1.此题线索为第二三段的内容。Now scientists believe that this peak could result in vast solar explosions that could throw billions of tons of charged matter towards the Earth, causing strong solar storms.选 B.

2.推理题：从第五段的句子：At the peak of the cycle, violent outbursts called coronal mass ejections (日冕物质抛射) occur in the Sun's atmosphere, throwing out great quantities of electrically-charged matter. " 可知在日冕物质抛射之后，太阳黑子数量会减少。选D.

3.推理题：从最后一段的句子："If we have advance warning, we'll be able to reduce the damage.可知及早警告可以减少太阳风暴带来的危险。选D。

4.细节题：可从文章第六段which will take images of the Sun that are 10 times clearer than the most advanced televisions available.直接得出答案。选A

5.主旨题：通读全文可知整篇文章讨论的是太阳运动所可能会带来的困扰。

考点：考查科普类短文

点评：文章比较抽象，但题目并不难，集中考查了细节题，题目设置较为合理，涵盖了全篇文章内容，在做题的时候，准确确定考点，准确判断就行。