It isn’t clear_____ is to blame.We need to fi...

It isn’t clear_____ is to blame.We need to find a solution to the problem first.

高三英语单项填空中等难度题查看答案及解析

It is necessary that the government 　　　 solutions for the problems of air pollution to create a clear environment.

A. should have found　　　 B. could have found

C. could find　　　　　　　　 D. should find

高三英语单项填空中等难度题查看答案及解析

C

Could the solution to world future energy needs lie in the ocean? It’s possible.

We are not talking about oil, but another potential untapped energy resource called “methane hydrates”.

Methane hydrates are hard, ice-like white solids that form naturally in deposits (沉积物) on ocean floors. They arecomposed of water and highly concentrated methane produced by the microorganisms living in the deposits.

The remarkable thing is that you can hold a flame to a piece of methane hydrate and it will catch on fire. It’s been called “burning ice.”

Methane hydrates are spread around the world. These deposits may in the future become a very important fuel resource. One researcher calculated that a small area off the Southeastern coast of America may contain methane hydrates equal to 30 times the annual U.S. consumption of natural gas.

Right now there are very significant technical and financial challenges facing us before we could exploit this as a resource. Scientists around the world are studying these challenges. One big issue is how to get these methane hydrates off the ocean floor, causing undersea landslides and tidal waves.

Another issue is how to handle the matter after it is brought up. It’s also unclear whether it would make more sense to “mine” solid hydrates or tap the gases found with them. And many deposits may occur in low concentrations with no commercial potential.

Japan, which has no oil supplies of its own, has thrown itself into burning ice research because it has deposits off its shores which could make Japan less dependent on foreign suppliers of oil.

The U.S. Department of Energy and Congress are also supporting research. However, the US administration’s energy policy is focused on traditional fossil (化石) fuels. And at least for now, developing burning ice into a fuel source isn’t high on the energy industry’s list. But if natural gas continues to rise in price, exploiting burning ice might become economically practical.

59. What’s the meaning of the underlined word in Paragraph Two?

A. not existed              B. Unseen         C. available but not used              D. unreal

60. What can you learn from the text?

A. Burning ice has been used in some countries.

B. Applying burning ice tops the energy list in America.

C. Burning ice exists in few countries.

D. There are still some problems in developing the burning ice

61. Why has Japan already begun to develop the burning ice?

A. It is a developed country.  B. They want to help other countries.

C. It lacks oil supplies of its own. D. America asked Japan to do so.

62. Which one is the best title of the text?

A. World Energy Shortage           B. Burning Ice Holds Hope as Fuel Source

C. Methane Hydrates               D. Methane Hydrates Spread around the World

高三英语阅读理解简单题查看答案及解析

Theoretically, there are many solutions to such a problem, but it is not easy to find________easy to put into practice.

A.that B.one C.it D.the one

高三英语单项填空中等难度题查看答案及解析

91. ______ finding solutions, it is unthinkable to solve all the problems the same way throughout the country.

高三英语单项填空简单题查看答案及解析

We left the small town, ______ clearly_____ no need to stay.

A. there； being            B. it; was

C. it; being;             D. there；was

高三英语单项填空中等难度题查看答案及解析

We left the small town, ______ clearly_____ no need to stay.

A．there； being     B．it; was            C．it; being;          D．there；was

高三英语单项填空中等难度题查看答案及解析

We left the small town, _________clearly _________no need to stay．

A．it; was           B．it; being          C．there; was       D．there; being

高三英语单项填空中等难度题查看答案及解析

Do you ever pull your phone out of your pocket，thinking it is vibrating（振动），only to find that it isnˈt？This phenomenon，which scientists call"phantom（幻觉的）phone vibration"，is very common．Around 80% of people surveyed say they have imagined their phones vibrating when they were actually still．

So，what leads to this universal behavior？According to the BBC，the explanation lies in your brainˈs ability to discover signals from the outside world．When your phone is in your pocket，there are two possible states：it is either vibrating or not．Meanwhile，you also have two possible states of mind：the judgment that the phone is vibrating，or that it isnˈt．Ideally，you match the four states correctly．

However，sometimes your brain decides that the results of missing a call are more serious than a"false alarm"．Therefore，you become more sensitive（敏感的） to vibrations so that you donˈt miss anything． This is just like the fire alarm in your home---it can be annoying when it goes off in response to just a tiny bit of smoke．But thatˈs a small price to pay compared to a fire really breaking out because the alarm fails to alert you．Now，you might still ask：why canˈt our brains just make every judgment correctly without being too sensitive to false signals？The answer is that your brain bears a heavy burden every day．"You get a large amount of sensory(感觉的) information thatˈs coming from your eyes，ears and skin，and you canˈt deal with all that information all the time，"Michael Rothberg，a researcher at Baystate Medical Center in Springfield，US，told Live Science．

For example，the rustling（沙沙声）of clothing or the growling（咕咕声）of your stomach may both lead your brain to believe that they come from the vibration of your phone-it is like trying to hear your name being called in a noisy room．

So，perhaps you should just check your phone whenever you think itˈs vibrating．Itˈs not too much trouble to do that，is it？

1.According to this passage，phantom phone vibration ______ ．

A.is common among people with mental problems

B.can measure peopleˈs ability to collect information

C.happens when our brains react sensitively to false signals

D.helps our brains to make very quick and accurate decisions

2.Why is the fire alarm used as an example in this passage？

A.To show us the fire alarm is as sensitive as the phone vibration．

B.To help us understand the cause of phantom phone vibration better．

C.To tell us the phone vibration usually happens when a fire breaks out．

D.To convince us itˈs important to check our phones like checking a fire alarm．

3.According to Michael Rothberg，which is mainly responsible for phantom phone vibration？

A.A noisy background． B.A lack of much attention．

C.A heavy burden every day． D.An overflow of sensory information．

4.What does the author suggest we do about phantom phone vibration？

A.We should always fully believe our own sense of listening．

B.We should just check our phones whenever we think theyˈre vibrating．

C.We should ignore the vibration bothering when our phones are actually still．

D.We should think of the vibration carefully before we make correct judgments．

高三英语阅读理解中等难度题查看答案及解析

In face of danger, we need to stay _______. Only in this way can we come up with good solutions.

A. still         B. quiet        C. calm        D. silent

高三英语单项填空中等难度题查看答案及解析