[单项选择]

It is believed that climbing can build up the body. When it comes to some skills of climbing, mountain climbing will be the first choice for most people. Now many Americans are learning how to climb in gyms. Here, people can learn and practice on specially designed climbing walls. The climbing wall is vertical and has small holding places for hands and feet.
How do people climb the wall In order to climb, you need a pair of special shoes and a harness (保护带)around your chest to hold you. Ropes are tied to your harness, which hold you in place so that you don’t fall. There are small pieces of metal that protrude for you to stand on and hold on to. Sometimes it’s easy for one to see the new piece of metal, and sometimes it’s not. The most difficult section in climbing is probably to control your sense of fear. It’s normal for one to be afraid of falling, so it’s natural that you feel fear. But just remember when you move away from the wall, the
A. To tie ropes to your harness.
B. To find small pieces of metal.
C. To control your fear.
D. To climb to the top.

[单项选择]

It is believed that climbing can build up the body. When it comes to some skills of climbing, mountain climbing will be the first choice for most people. Now many Americans are learning how to climb in gyms. Here, people can learn and practice on specially designed climbing walls. The climbing wall is vertical and has small holding places for hands and feet.
How do people climb the wall In order to climb, you need a pair of special shoes and a harness (保护带)around your chest to hold you. Ropes are tied to your harness, which hold you in place so that you don’t fall. There are small pieces of metal that protrude for you to stand on and hold on to. Sometimes it’s easy for one to see the new piece of metal, and sometimes it’s not. The most difficult section in climbing is probably to control your sense of fear. It’s normal for one to be afraid of falling, so it’s natural that you feel fear. But just remember when you move away from the wall, the
A. relax
B. exercise
C. thrill
D. happiness

[单项选择]With regular exercise, the body builds up its levels of BDNF (brain-derived neurotrophic factor), and the brain’s nerve cells start to branch out, join together and communicate with each other in new ways. This is. the process that underlies learning: every change in the junctions between brain cells signifies a new fact or skill that’s been picked up and stowed away for future use. BDNF makes that process possible. Brains with more of it have a greater capacity for knowledge. On the other hand, says UCLA neuroscientist Fernando Gámez-Pinilla, a brain that’s low on BDNF shuts itself off to new information,
What will happen if a person has a brain that’s low on BDNF
A. He will be able to learn many new skills.
B. He will forget all the information stored in his brain.
C. He will be able to learn things quickly.
D. He will not pick up new information quickly.

[单项选择]Nowadays, it seems that no body can provide a satisfactory answer to sports violence. The distinction between unacceptable hostility and a game’s normal rough-and-tumble (混战，扭打) is impossible to make, or so the argument runs. This position may appeal to our inclination for legalism, but the truth is most of us know quite well when an act of needless savagery (野性) has been committed, and sports are little different from countless other activities of life. The distinction is as obvious as that between a deliberately aimed blow and the arm flailing of an athlete losing his balance. When a player balls his hand into a fist, when he drives his (头盔) into an unsuspecting opponent—in short, when he crosses the boundary between playing hard and playing to hurt—he can only intend an act of violence.
Admittedly, violent acts in sports are difficult to police. But here, too, we find reflected the conditions of everyday life. Ambiguities in the law, confusion at the scene, and the reluctance o
A. It’s impossible to make.
B. It’s too obvious to escape observation.
C. It’s not very clear in any circumstances.
D. It’s not very difficult to make if enough attention is aid to it.

[单项选择]
Exactly what do you do during a normal day How do you spend your time Paul T. Rankin very much wanted an answer to that question. To get it, he asked sixty-eight individuals to keep an accurate, detailed record of what they did every minute of their waking hours. When he consolidated (巩固) his findings, he discovered that the average individual spent 70 percent of his waking time doing one thing only--communication. That meant either reading, writing, speaking or listening.
Put that evidence alongside of the research findings uncovered by the Human Engineering Laboratories. In exploring aptitudes and careers involving, among other things, data from 30,000 vocabulary tests given yearly, they discovered that big incomes and big vocabularies go together. Vocabulary, more than any other factor yet known, predicts financial success.
And it all fits. Each word you add to your vocabulary m
A. To teach readers how to enlarge their vocabulary.
B. To explain the meaning of the CPD formula.
C. To introduce some research findings on communication.
D. To encourage readers to throw their dictionaries away.