Enough has been said about health. _______ we...

Enough has been said about health. _______ we should be aware that nothing is more valuable than health which is a solid foundation of one’s success.

A.In all B.In bold C.In approval D.In conclusion

高三英语单项填空简单题查看答案及解析

Most of what has been said about the Simiths        also true of the Johnsons．

A．are                B．is

C．being              D．to be

高三英语单项填空中等难度题查看答案及解析

Web reports about Jackson’s health began to _______ after some website said the star had been taken to hospital and given treatment.

A. circulate　　　     B. translate　　　 C. distinguish　　 D. Accelerate

高三英语单项填空中等难度题查看答案及解析

We should be aware that the degree ______ our diet is successful depends on our willpower.

A.that B.which C.to which D.on whom

高三英语单项填空中等难度题查看答案及解析

My parents had ________ me to be aware of the advantage we had been afforded and the responsibility it brought to us.

A．argued           B．shared            C．raised            D．quarreled

高三英语单项填空中等难度题查看答案及解析

The number of historic buildings which ________ has reached a surprising figure that we must be aware of.

A．has been pulled down      B．had been pulled down

C．is being pulled down      D．have been pulled down

高三英语单项填空中等难度题查看答案及解析

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 after coronal mass ejections.

3. 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

4. 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

高三英语阅读理解简单题查看答案及解析

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 after coronal mass ejections.

3.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

4.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

高三英语阅读理解中等难度题查看答案及解析

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

高三英语阅读理解中等难度题查看答案及解析

It is said that the meeting ______ for three hours. Why should I regret missing it?!

A. has been lasted    B. has been lasting           C. lasted     D. had lasted

高三英语单项填空中等难度题查看答案及解析