With his attention________on the shops along the roadside，he knocked an old man down while riding to school.

A  concentrating     B．concentrated     C．to concentrate      D．concentrates

答案　B

解析　考查词组，故选B项。

（2011·安徽卷）B

Think about the different ways that people use the wind. You can use it to fly a kite or to sail a boat. Wind is one of our cleanest and richest power sources（来源）, as well as one of the oldest. Evidence shows that windmills（风车）began to be used in ancient Iran back in the seventh century BC. They were first introduced to Europe during the 1100s, when armies returned from the Middle East with knowledge of using wind power.

For many centuries, people used windmills to grind（磨碎）wheat into flour or pump water from deep underground. When electricity was discovered in the late 1800s, people living in remote areas began to use them to produce electricity. This allowed them to have electric lights and radio. However, by the 1940s, when electricity was available to people in almost all areas of the United States, windmills were rarely used.

During the 1970s, people started becoming concerned about the pollution that is created when coal and gas are burned to produce electricity. People also realized that the supply of coal and gas would not last forever. Then, wind was rediscovered, though it means higher costs. Today, there is a global movement to supply more and more of our electricity through the use of wind.

60. From the text we know that windmills              .

A. were invented by European armies

B. have a history of more than 2800 years

C. used to supply power to radio in remote areas

D. have rarely been used since electricity was discovered

61. What was a new use for wind power in the late l9th century?

A. Sailing a boat. 

B. Producing electricity.

C. Grinding wheat into flour.

D. Pumping water from underground.

62. One of the reasons wind was rediscovered in the 1970s is that             .

A. wind power is cleaner

B. it is one of the oldest power sources

C. it was cheaper to create energy from wind

D. the supply of coal and gas failed to meet needs

63. What would the author probably discuss in the paragraph that follows?

A. The advantage of wind power.

B. The design of wind power plants.

C. The worldwide movement to save energy.

D. The global trend towards producing power from wind.

【解析】选D。推理判断题。根据末段句子Today, there is a global movement to supply more and more of our electricity through the use of wind可知，接下来作者应该谈论利用风能发电的情况，因此选择D项。

129. Come on, guys. We’ve been working hard and long. Let’s______. Go home and get relaxed.

   Directions: For each blank in the following passage there are four words or phrases marked A,B,C and D. Fill in each blank with the word or phrase that best fits the context.
It was a cold evening and my daughter and I were walking up Broadway．I didn’t notice a guy sitting inside a cardboard box．But Nora did．She wasn’t even four, but she  36  at my coat and said, “That man’s cold, Daddy, can we take him home?”
I don’t remember my reply．But I do remember a sudden   37  feeling inside me．I had always been delighted at how much my daughter noticed in her world, whether it was birds in flight or children playing．But now she was noticing  38  and beggary．
A few days later, I saw an article in the newspaper about volunteers who picked up a food package from a nearby school on a Sunday morning and  39  it to an elderly person．It was quick and easy．I signed us up．Nora was excited about it．She could understand the importance of food, so she could easily see how  40  our job was．When Sunday came, she was ready, but I had to  41  myself to leave the house to fetch the food package．On the way to the school, I fought an urge to turn back．The Sunday paper and coffee were waiting for me at home．Why do this? Still, we phoned the elderly person we’d been appointed. She   42  us right over．
The building was in a bad state．Facing us was a silver-haired woman in an old dress．She took the package and asked us to come in．Nora ran inside．I unwillingly followed． 43  inside, I saw that the apartment belonged to someone poor．Our hostess showed us some photos．Nora played and when it came time to say good-bye, we three hugged, I walked home in  44  ．
Professionals call such a（n）  45  a “volunteer opportunity”．They are opportunities, and I’ve come to see．Where else but as volunteers do you have the opportunity to do something enjoyable that’s good for others as well as for yourself? Nora and I regularly serve meals to needy people and  46  clothes for the homeless．Yet, as I’ve watched her grow over these past four years, I still wonder ---- which of us has  47  more?
36．A．pulled      B．glanced     C．pointed     D．aimed
37．A．general     B．funny       C．heavy       D．simple
38．A．coldness   B．illness       C．suffering   D．ignorance
39．A．delivered  B．returned    C．devoted    D．posted
40．A．creative    B．valuable    C．shocking   D．simple
41．A．warn B．stop   C．allow D．push
42．A．called       B．promised  C．invited      D．helped
43．A．Although  B．Once C．Because    D．Though
44．A．tears  B．laughter    C．anger D．fear
45．A．stay   B．visit  C．adventure  D．challenge
46．A．collect      B．make C．order D．wear
47．A．increased  B．benefited  C．tried  D．seized