DFew people would question the value of taking part in sports for young people．With proper training.supervision.protective equipment and techniques.and an proper emphasis on winning.sports can develo 题目和参考答案——青夏教育精英家教网—

题目内容

D
Few people would question the value of taking part in sports for young people．With proper training，supervision，protective equipment and techniques，and an proper emphasis on winning，sports can develop a healthy body and spirit and a life-long interest in being active and fit .Without such measures，childhood sports can lead to injuries and even paralysis or death．
Even in the best conditions，no activity can be risk—free．But most serious hazards are preventable．Cyclists and football players can reduce their risks by wearing helmets；hockey players by wearing masks；basketball and tennis players by wearing eye guards；baseball players by wearing batting helmets．
Besides，risks to individual players can often be found，and thus prevented，through a properly performed medical exam before a child plays．For accidents that may not be preventable，having an emergency plan and first-aid equipment，and someone trained to use the equipment，can be lifesaving．
Still，each year，according to the American College of Sports Medicine，more than 775,000 children under 14 are treated in emergency rooms for sports injuries，nearly half of them preventable．An estimated 300,000 athletes experience exercise—related head illnesses each year，and almost all of them should have been avoided．
Further，from half to three—fourths of sports-related concussions（脑震荡） are never even diagnosed；the injured are often sent back in to play too soon and put at risk of another more serious brain—damaging concussion．To help reduce these risks, the National Center for Sports Safety, with the National Athletic Trainers’ Association, offers a three-hour online safety course for coaches for $28 at www.SportsSafety.org.
68．Which of the following is true according to the passage?
A．All the accidents can be prevented．B．All the accidents cannot be prevented．
C．Lives can be saved so long as there is proper equipment．
D．Lives cannot be saved even if there is proper equipment．
69．What does the underlined word “hazards”(in paragraph 2)mean?
A．mistakes B．diseases C．dangers D．situations
70．It is implied in the passage that ．
A．prevention of injuries is not paid enough attention to
B．children under 14 are more easily hurt in sports
C．most head illnesses are related with exercise
D．none of the head illnesses should have happened
71．What can coaches mainly learn from the online safety course?
A．How to cure brain-damaging concussion．
B．How to diagnose brain-damaging concussion．
C．How to predict the possibility of brain damage．
D．How to deal with the injured properly．

68---71 B C A D

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相关题目

　　Take any long piece of paper. Now glue the ends of the paper together. You have made a ring.

　　Take a second long piece of paper. Twist(turn round)the paper once and glue the ends together. Now you have made a Mobius band. For people who study math,this band is special.

　　This strange band was first made in the 1800s by a German man named August Mobius. Mr Mobius studied math. He wanted to find a way to prove how this band works with math. Believe it or not,this band has only one surface. You can find t his out for yourself.

　　If you draw a line on the surface of the paper before you twist and glue it,the line is only on one side of the paper. The paper has two surfaces. However,if you draw a line after you make the Mobius band,you can follow the line around all sides of the paper. In other words,the Mobius band must have only one surface.

　　It is also kind of fun to see what happens when you cut the band. If you cut the Mobius band in half once down the line you dfew,you do not get two Mobius bands. Instead,after you cut the band,it turns into one large twisted ring. Then,if you cut this ring in half along the middle of the band again,you get two connected Mobius bands.

　　Try it

　　1．What is a Mobius band?

　　A．A musical group.

　　B．An interesting twisted ring.

　　C．A long piece of paper.

　　D．Glue.

　　2．August Mobius________.

　　A．studied math

　　B．was a German

　　C．made the first Mobius band

　　D．all of the above

　　3．How can you see that the Mobius band has only one side?

　　A．Cut it.

　　B．Glue it.

　　C．Draw a line on it.

　　D．Twist it.

　　4．What do you get if you cut the Mobius band in half once?

　　A．One large twisted ring.

　　B．Two Mobius bands.

　　C．A long piece of paper.

　　D．A short piece of paper.

　　5．What do you get if you cut the Mobius band in half twice?

　　A．One large twisted ring.

　　B．Two Mobius bands.

　　C．A long piece of paper.

　　D．A shart piece of paper.

Annealing

Annealing is a way of making metal softer by heating it and then letting it cool very slowly, if metal is heated and then cooled very quickly, for example by dipping(浸) it in water, it will be very hard but also very brittle(脆)—that is, it will break easily. Metal that has been annealed is soft but does not breaks as easily. It is possible to make metal as hard or as soft as is wished, by annealing it. The metal is heated, and allowed to cool slowly for a certain length of time. The longer the heated metal takes to cool slowly, the softer it becomes. Annealing can also be used on other material, such as glass.

1. Annealing can make metal ____

　　A. hard and tough(韧)　B. hard but brittle　　C. soft but tough　　D. soft and brittle

2. Why do people put hot metal in water?

　　A. To make it hard.　　B. To make it soft.　C. To make it cool.　D. To make it brittle

3. In annealing, the required hardness of a metal depends on 　______

　　A. the quantity of water used　B. the temperature of the metal

　　C. the softness of the metal　 D. the timing of the operation

4. As suggested by the text, how can glass be made less brittle?

　　A. It can be heated and then cooled quickly.

　　B. It can be cooled and then heated slowly.

　　C. It can be heated and then cooled slowly.

D. It can be cooled and then heated quickly.

完形填空（共20小题；每小题1.5分，满分30分）

阅读下面短文，从短文后各题所给的四个选项（A、B、C和D）中，选出可以填入空白处的最佳选项，并在答题卡上将该项涂黑。

Driving to a store after a busy day at work, I saw a man standing near the store holding a sign that said, “will work for food.” I knew at that moment that I was going into the store and 36 him something to eat.

As I 37 the car park, I saw in my car mirror a lady come out from a hairdresser’s and 38 the man. I thought she must be going to give him some 39 or something to help him out. In the store I was 40 to get the things I needed and also the chicken dinner and a soda that I wanted to give the man outside. I hurried out to my car and 41 that I was going to be able to hopefully help this man.

When I drove out of the car park, I couldn’t see the 42 . As I turned the corner I saw the man sitting in a 43 area away from the hairdresser’s and still 44 up the sign. I immediately 45 over and gave the man the dinner and soda and said“ 46 this will get you through today.” He looked at me and said “Thank you so much！”As I got back into my car, I looked in the 47 and saw the man swallowing the dinner as if he hadn’t eaten for days.

I was so 48 that I was able to help him and at the same time I was so sad that the woman from the hairdresser’s, 49 ,had asked the man to 50 from her shop. It’s sad to say that 51 I live in a small city where homeless is not as 52 as in larger cities, people are uncomfortable with these people in 53 . All they need to do is lend a helping hand 54 and it could make a huge 55 in their lives.

A. cook B. buy C. pay D. serve

A. turned into B. got over C. called at D. pointed out

A. interview B. comfort C. blame D. approach

A. example B. space C. money D. comfort

A. preparing B. hurrying C. hesitating D. planning

A. explained B. wondered C. agreed D. felt

A. man B. food C. lady D. sign

A. different B. strange C. famous D. comfortable.

A. making B. holding C. taking D. building

A. turned B. thought C. pulled D. looked

A. Hopefully B. Finally C. Luckily D. Naturally

A. store B. mirror C. square D. crowd

A. popular B. anxious C. pleased D. patient

A. immediately B. obviously C. carefully D. nervously

A. stop B. suffer C. move D. change

A. whether B. because C. though D. unless

A. poor B. visible C. selfish D. happy

A. danger B. action C. need D. moment

A. at times B. at the time C. at one time D. at a time

A. difference B. mistake C. decision D. living

D
Few people would question the value of taking part in sports for young people. With proper training, supervision, protective equipment and techniques, and a proper emphasis on winning, sports can develop a healthy body and spirit and a life-long interest in being active and fit. Without such measures, childhood sports can lead to injuries and even paralysis or death.
Even in the best conditions, no activity can be risk-free. But most serious hazards are preventable. Cyclists and football players can reduce their risks by wearing helmets, hockey players by wearing masks; basketball and tennis players by wearing eye guards; baseball players by wearing batting helmets.
Besides, risks to individual players can often be found, and thus prevented, through a properly performed medical exam before a child plays. For accidents that may not be preventable, having an emergency plan and first-aid equipment, and someone trained to use the equipment, can be lifesaving.
Still, each year, according to the American College of Sports Medicine, more than 775, 000 children under 14 are treated in emergency rooms for sports injuries, nearly half of them preventable. An estimated 300,000 athletes experience exercise-related head illnesses each year, and almost all of them should have been avoided.
Further, from half to three-fourths of sports-related concussions(脑震荡) are never even diagnosed; the injured are often sent back to play too soon and put at risk of another more serious brain-damaging concussion. To help reduce these risks, the National Center for Sports Safety, with the National Athletic Trainers’ Association, offers a three-hour online safety course for coaches for $28 at www. SportsSafety. Org.
52. Which of the following is true according to the passage?
A. All the accidents can be prevented.
B. All the accidents cannot be prevented.
C. Lives can be saved so long as there is proper equipment.
D. Lives cannot be saved even if there is proper equipment.
53. What does the underlined word “hazards” (in Paragraph 2)
A. Mistakes.                        B. Diseases.    C. Dangers.          D. Situations.
54. It is implied in the passage that _____________.
A. prevention of injuries is not paid enough attention to
B. children under 14 are more easily hurt in sports
C. most head illnesses are related with exercise
D. none of the head illnesses should have happened
55. What can coaches mainly learn from the online safety course?
A. How to cure brain-damaging concussion.
B. How to diagnose brain-damaging concussion.
C. How to predict the possibility of brain damage.
D. How to deal with the injured properly.

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