Question

       There are two kinds of physical activity which require special training. The first demands exact careful movements of the muscles（肌肉）. This kind of activity must be strictly controlled because even a slight movement in the wrong direction will lead a mistake. To type quickly, for example, a person needs training; the slightest movement of a finger in the wrong direction may cause a spelling mistake. A dancer who has to dance on the point of her shoes or turn around on one foot must be trained for a long period of time before she can sense her own center and balance herself. You may have seen a girl walking on a rope across an empty space, which, too, requires a lot of practice.

      The second kind of physical activity needs greater strength or extra effort. Most of us get tired if we try to run half a mile without stopping, but a specially-trained person can do this without much effort. Three years ago, some scientists carried out experiments, which produced meaningful and unexpected results. They wanted to find out whether a certain amount of physical exercise would injure those suffering from heart problems. They selected some male patients and trained them in continuous bicycle riding. They were surprised to find that the harmful effect of given amount of physical effort was actually less on the hearts of these trained patients than on those of the patients who were not similarly trained. This is important because it shows that regular physical exercise enables us to make better use of the oxygen（氧氣）we breathe in and that this training, in fact, reduces the amount of work our hearts do. Many tasks which are hard for untrained people are not hard at all for trained people.

72．The first kind of physical activity must be strictly controlled because _________.

       A．a mistake in the wrong direction is dangerous to the fingers

       B．a wrong movement in a direction will cause no mistakes

       C．a movement in the wrong direction will cause a mistake

       D．a slight movement of a finger will lead to a mistake

73．What must a dancer do before she can balance herself?

       A．She must dance on the point of her shoes.        B．She must receive long-time training.

       C．She must turn around on one foot.               D．She must perform again and again.

74．The experiments done by some scientists showed that ________.

       A．some male patients were asked to ride bicycles regularly in the experiments

       B．the physical exercise had more harmful effect on the hearts of the untrained patients

       C．the physical exercise was harmless to the male patients with heart trouble

       D．the physical exercise could be helpful for the patients to take in more oxygen

75．What would be the best title for this text?

       A．Training Our Bodies                             B．Physical Activities

       C．Movement Training                              D．Extra Body Effort

Answer 1

72.C 73.B 74.B 75.A

解析:

72.解析：這是一道細節題。第一段“This kind of activity must be strictly controlled because even a slight movement in the wrong direction will lead to a mistake.”說明這種活動必須嚴格控制的原因是運動方向性的錯誤可能會導致錯誤。

73.解析：這是一道細節題。第一段“A dancer who has to dance on the point of her shoes or turn around on one foot must be trained for a long period of time before she can sense her own center and balance herself.”說明舞蹈演員為了得到平衡感，必須進行單腳旋轉訓練。

74.解析：這是一道細節推斷題。根據第二段“They were surprised to find that the harmful effect of a given amount of physical effort was actually less on thehearts of these trained patients than on those of the patients who were not similarly trained.”可判斷出體育鍛煉會對那些沒經過訓練的病人的心臟造成更大的傷害。

75.解析：這是一道主旨題。這篇短文論述了訓練的重要性。