问题 选择题

某电流表刻度盘上除零刻度和最大刻度“3A”能辨认外,其他刻度都已模糊不清,只知道指针从零刻度到最大刻度之间转过的角度是120°。现将一只电阻R1与这只电流表串联后接在电源两端(电源电压恒定),电流表指针偏转的角度是96°;若在电路中再串联一只R2=3Ω的电阻,电流表指针偏转的角度是64°。则R1的阻值是:[ ]

A.2Ω

B.4.5Ω

C.6Ω

D.18Ω

答案

答案:C

完形填空

[1] Mental and health experts believe personality plays an important part in how we experience stress. Personality is the way a person acts, feels and thinks.

[2] Some people are aggressive and always in a hurry. They often become angry when things do not happen the way they planned. They are called “Type A” personalities. Studies suggest that these people often get stress-related disorders. The “Type B” personality is calmer. These people are able to deal with all kinds of situations more easily. As a result, they are less affected by stress.

[3] Studies have also shown that men and women deal with stress differently. Women seem to be better able to deal with stress than men are. However, experts say women are three times more likely to develop depression(抑郁) in reaction to the stress in their lives. American writer John Gray became famous for his book Men are from Mars, Women are from Venus(金星). He notes that men and women have opposite ways of dealing with stress. For a man, the best way is to rest and forget about daily problems. But a woman suffering from stress needs to talk about her problems.

[4] Experts say there are several ways to deal with stress, including deep breathing, exercise, eating healthy foods, getting enough rest and balancing the time spent working and playing. Exercise is one of the most effective stress- reduction measures, as physical changes from exercise make you feel better. In addition, exercise can also improve the body’s defense system against disease.

[5] Keeping stress to yourself can make problems worse. Experts say that expressing emotions to friends or family members or writing down your feeling can help reduce stress. And they also suggest that people should attempt to accept or change stressful situations whenever possible.

小题1: What does Paragragh 2 mainly talk about? ( No more than 15 words)

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小题2:Please explain the underlined word “ aggressive” in paragraph 2. ( No more than 5 words)

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小题3:According to this passage, why does physical exercise help reduce stress?( No more than 20 words)

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小题4:What shouldn’t you do when you have stress problems and why?( No more than 15 words)

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小题5:Are you a “Type A” personality or a “Type B” personality? How should you deal with stress in your daily life? ( No more than 25 words)

单项选择题