[简答题]From the age of 15, young people can become British Red Cross volunteers(英国红十字会志愿者)—but that doesn’t mean you can’t start earlier. We have set up this age rule for many reasons. But the fact is that we’d love you to learn more about Our work at the Red Cross right now—and perhaps start preparing for your future volunteering role. We have lots of fun activities to keep you involved right now.

[单项选择]As people age, their cells become less efficient and less able replace damaged components. At the same time their tissues stiffen, For example the lungs and the heart muscle expand less successfully, the blood vessels become increasingly rigid, and the ligaments and tendons tighten.
Few investigators would attribute such diverse effects to a single cause. Nevertheless, researchers have discovered that a process long known to discolor and toughen foods may also contribute to age-related impairment of both cells and tissues. That process is nonenzymatic glycosylation, whereby glucose becomes attached to proteins without the aid of enzymes. When enzymes attach glucose to proteins (enzymatic glycosylation), they do so at a specific site on a specific protein molecule for a specific purpose. In contrast, the nonenzymatic process adds glucose haphazardly to any of several sites along any available peptide chain within a protein molecule.
This nonenzymatic glyeosylation of certain p
A. It paradoxically both helps and hinders the longevity of proteins in the human body.
B. It can be counteracted in part by increased ingestion of glucose-free foods.
C. It is exacerbated by increased enzymatic glycosylation.
D. It probably involves the nonenzymatic glycosylation of proteins.

[填空题]James Gilmore thinks that people become more creative when subjected to ______.

[单项选择]People become quite illogical when they try to decide what can be eaten and what cannot be eaten. If you lived in the Mediterranean, for instance, you would consider octopus a great delicacy. You would not be able to understand why some people find it repulsive. On the other hand, your stomach would turn at the idea of frying potatoes in animal fat—the normally accepted practice in many northern countries. The sad truth is that most of us have been brought up to eat certain foods and we stick to them all our lives.
No creature has received more praise and abuse than the common garden snail. Cooked in wine, snails are a great luxury in various parts of the world. There are countless people who, ever since their early years, have learned to associate snails with food. My friend, Robert, lives in a country where snails are despised. As his flat is in a large town, he has no garden of his own. For years he has been asking me to collect snails from my garden and take them to him. The
A. A．1 most probably means "______". disgustingB. pleasantC. acceptableD. delicious

[填空题]When people become unemployed ,it is idleness which is often __________________(比没有收入更糟糕).

[单项选择]

It is indeed unfortunate that in our modern era of technologic and scientific achievement, there is no adequate explanation for a seemingly simple question: "why do people become too fat and what can be done to prevent it" about 50 million men and 60 million women between the ages of 18 and 79 are "too fat" and need to reduce excess weight. This amount to about 377 million kg of excess fat for men and 667 million kg for women, or a total of t044 million kg (2297 million 1b) for the United States adult population! If the overfat men and women dieted by consuming 600 fewer calories each day to reduce to a "normal" value of body fat (achievable in 68 days for men and 101 days for women), the reduced caloric intake would equal 5.7 trilling calories. Translating this into fossil fuel energy and considering such factors as the energy required to plant, cultivate, harvest, feed, proce
A. Right
B. Wrong
C. Not mentioned

[填空题]If people become extremely rich, most of them don’t bother to _____________________ (学习知识) they need to succeed any more.