Doctor: What seems to be the matter？ Patient: Well, my heartbeat is fast and I have trouble breathing recently.Doctor: __ Your weight is giving much burden on your heart.
A．I have to give you some medicine.
B．I'm sorry. Your weight is a problem.
C．You need some exercises.
D．I'm afraid you have to lose at least 40 pounds.
相关问题推荐
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The word "scrutiny"（Line 3, Para. 3) most probably means" ______".
A．inquiry
B．observation
C．control
D．suspicion -
In the 1960s, medical researchers Thomas Holmes and Richard Rahe developed a checklist of stressful events. They appreciated the tricky point that any major change can be stressful. Negative events like "serious illness of a family member" were high on the list, but so were some positive life-changing events, like marriage. When you take the Holmes-Rahe test you must remember that the score does not reflect how you deal with stress—it only shows how much you have to deal with. And we now know that the way you handle these events dramatically affects your chances of staying healthy.
By the early 1970s, hundreds of similar studies had followed Holmes and Rahe. And millions of Americans who work and live under stress worried over the reports. Somehow, the research got boiled down to a memorable message. Women's magazines ran headlines like "Stress causes illness". If you want to stay physically and mentally healthy, the articles said, avoid stressful events.
But such simplistic advice is impossible to follow. Even ff stressful events are dangerous, many—hke the death of a loved one- are impossible to avoid. Moreover, any warning to avoid all stressful events is a prescription（处方) for staying away from opportunities as well as trouble. Since any change can be stressful, a person who wanted to be completely free of stress would never marry, have a child, take a new job or move.
The notion that all stress makes you sick also ignores a lot of what we know about people. It assumes we're all vulnerable（脆弱的) and passive in the face of adversity（逆境). But what about human initiative and creativity？ Many come through periods of stress with more physical and mental vigor than they had before. We also know that a long time without change or challenge can lead to boredom, and physical and mental strain.
The result of Holmes-Rahe's medical research tells us ______.
A．the way you handle major events may cause stress
B．what should be done to avoid stress
C．what kind of event would cause stress
D．how to cope with sudden changes in life -
有的地质学家认为，如果地球未勘探地区中单位面积的平均石油储藏量能和己勘探地区一样的话，那么，目前关于地下未开采的能源含量的正确估计因此要乘上一万倍。如果地质学家的这一观点成立，那么，我们可以得出结论：地球上未勘探地区的总面积是已勘探地区的一万倍。为使上述论证成立，以下哪些是必须假设的？
Ⅰ．目前关于地下未开采的能源含量的估计，只限于对已勘探地区。
Ⅱ．目前关于地下末开采的能源含量的估计，只限于对石油含量。
Ⅲ．未勘探地区中的石油储藏能和已勘探地区一样得到有效的勘测和开采。
A．只有Ⅰ。
B．只有Ⅱ。
C．只有Ⅲ。
D．只有Ⅰ和Ⅱ。 -
某些种类的海豚利用回声定位来发现猎物：它们发射出滴答的声音，然后接收水域中远处物体反射的回音。海洋生物学家推测这些滴答声可能有另一个作用：海豚用异常高频的滴答声使猎物的感官超负荷，从而击晕近距离的猎物。以下哪项如果为真，最能对上述推测构成质疑？
A．海豚用回声定位不仅能发现远距离的猎物，而且能发现中距离的猎物。
B．作为一种发现猎物的信号，海豚发出的滴答声，是它的猎物的感官所不能感知的，只有海豚能够感知从而定位。
C．海豚发出的高频信号即使能击晕它们的猎物，这种效果也是很短暂的。
D．蝙蝠发出的声波不仅能使它发现猎物，而且这种声波能对猎物形成特殊刺激，从而有助于蝙蝠捕获它的猎物。 -
Waiter: Welcome, sir. May I help you？ Customer: __
A．Thank you. I'll have fried tofu and stir-fried cauliflower.
B．Yes, please. I'd like a hamburger and a chocolate shake.
C．Sorry. I don't need your help, thank you.
D．If you want to help me, I'll be glad to accept it.