[单项选择]

Some people seem to think that sports and games are unimportant. They like to watch TV at home, go to the cinema, or sleep. (21) in fact sports and games can be (22) great value, especially to people who work with their brains (23) of the day.
Sports and games should not be treated only as amusements (娱乐活动). They can (24) our bodies, prevent us (25) getting too fat, and keep us healthy. But these are not their only uses. They give us valuable practice (26) helping the eyes, brain and muscles (肌肉) to work together. In table tennis, the eyes can see the ball (27) , judge its speed and direction, and pass this information (28) to the brain. The brain then has to decide what to do, and sends its orders to the muscles of the arms, legs, and so on, (29) the ball is met and hit back (30) the player wants it to go. All this must happen (31) a very quick speed, and only those (32)
A. to
B. for
C. on
D. at

Some people seem to think that sports and games are unimportant. They like to watch TV at home, go to the cinema, or sleep. (21) in fact sports and games can be (22) great value, especially to people who work with their brains (23) of the day.
Sports and games should not be treated only as amusements (娱乐活动). They can (24) our bodies, prevent us (25) getting too fat, and keep us healthy. But these are not their only uses. They give us valuable practice (26) helping the eyes, brain and muscles (肌肉) to work together. In table tennis, the eyes can see the ball (27) , judge its speed and direction, and pass this information (28) to the brain. The brain then has to decide what to do, and sends its orders to the muscles of the arms, legs, and so on, (29) the ball is met and hit back (30) the player wants it to go. All this must happen (31) a very quick speed, and only those (32)
A. so as to
B. so that
C. in order to
D. so