His health deteriorated rapidly due to insufficient nutrition and______ medical care.

A . packaging B . Green Packaging C . Vacuum packaging D . Special packaging

A . 正确 B . 错误

A . apply to B . apply for C . apply with D . apply i

A．as B．as for C．because D．because of

A．A.do harm for B．B.do harmful to C．C.do harm to D．D.do harmful for

A．most B．mostly C．nearly D．almost

A．cripple B．buttress C．abandon D．suspend

We don't know what the effects would be on healthy human cells, Marinelli told New Scientist magazine. In the Italian study, after 24 hours 20 percent more leukemia cells died than healthy cells but longer exposure to the radio waves triggered genes in the surviving cancer cells to divide aggressively. The results of the study do not show any direct threat to human health but they support the belief of some scientists who say radiation can damage DNA and destroy the cell repair system, thus making tumors more deadly. But animal studies, including recent research by Australian scientists at the Institute of Medical and Veterinary Science in Adelaide, have shown that radiation from mobile phones does not trigger the growth of tumors. The WHO (i.e., The World Health Organization) has called for more research into the potential health hazards of mobile phones and has urged people to limit their use of them. A British government inquiry, which concluded that there was no evidence that mobile phones are a danger to health, has advised parents to discourage their children, whose brains are still developing, from using them excessively. What is the speaker's main topic？ A．Effects of using mobile phones on healthy human cells. B．Risks of developing cancer involved in the use of mobile phones. C．Damage to healthy cells caused by the use of mobile phones. D．The potential health hazards of mobile phones on humans.

1．现代人的视力正在受到严重的威胁 2．主要原因是哪些 3．保护视力必须从孩子做起…

2. There is considerable evidence that every thought or emotion has some related physical effect, and that every change within the nervous system should have some psychological effect. Although the precise nature of these correlations is not always known, the view that body and mind are constantly interacting in some way is now accepted by most psychologists. 3. The relationship between mind and body is particularly apparent in emotional states, especially those of fear and anger. When a person is in the grip of a powerful emotion his body undergoes changes, just as it does when he is asleep, ill or under the influence of drugs or alcohol. Most people are familiar with such sensations as a dry mouth when they are nervous, or a racing heart when they are afraid or excited. Such physical changes can be measured, for instance, by recording pulse rate and breathing, or by measuring the dilation of the pupils of the eyes. 4. a particularly sensitive measure of bodily change during periods of emotion is the galvanic skin response(GSR). This is used in the instrument known as the lie detector. The GSR depends on the fact that some mental activity produces bodily changes, such as sweating, which affect the skin's resistance to electricity. To measure GSR, electrodes are placed on the palm and on the back of the hand, and a weak current is passed between the electrodes. Changes in the current are recorded in an amplified form, often by means of an automatically controlled pen on moving paper. Other recordings, for instance of pulse, blood pressure and breathing, can be made simultaneously, by an instrument called a polygraph. 5. The galvanic skin response method has proved a very efficient indicator of general psychological arousal. Even slight embarrassment will cause a defection of the recording pen. A. Every thought or emotion has some related physical effect. B. GSR is a measure of bodily change during periods of emotion. C. GSR is very efficient in indicating people's emotion. D. GSR is very expensive. E. GSR is used to judging prisoners. F. Mind and body has an apparent relationship. Para 2 ______.

A．became better B．became worse C．became stronger D．became weaker

A．a poor economic approach to the Social Security retirement program B．the reform. of welfare in the Social Security retirement program C．major policy changes in the Social Security retirement program D．government debt in the Social Security retirement program 此题为多项选择题。

A．hear B．to hear C．heard D．to be heard

Much more interest has been shown in preventive medicine in recent years. This is probably due in part to the increasing costs of medical treatment, but the writings of such people as Dr. Keneth Cooper have also played an important role. In his book Aerobics. Dr. Cooper communicated his message of the benefits of exercise so effectively that many other authors have flowed in his trail, and literally millions of readers have put on their sports shoes and taken to the highways and byways of America. A recent survey showed that over 17 million people are jogging. Many of these are so serious that they have trained themselves to run the 26 miles and 385 yards of the hard and tiring marathons that are sponsored all over the country. The last time I was in Honolulu, I was amazed to see hundreds of people, young and old, running for their lives, and I discovered many of them have run in the Hawaiian Marathon. Exercise has also become a major part of conversation. A1 a dinner party recently, the president of a bank asked me, "You look like a runner; how far do you run each day？" A few days later when I appeared on a national television show, the host suddenly asked me if I was a regular runner. On both occasions the conversation turned to the subject of exercise and I found, as I have found whenever I have traveled recently, that this is a subject on many people's minds. Of course, there are still many people who are less than enthusiastic about exercise. They appreciate the philosophy of Robert M. Hutchins who said, "Whenever the thought of exercise occurs to me, I lie down till it passes." The first paragraph indicated that medical workers ______. A．are in great demand？ B．make a lot of money C．are concerned with their own health D．like sports more than ordinary people

A．nominal level B．ordinal level C．interval level D．ratio level