59. Which of the following is not considered to be a disadvantage by those who want to ban electric bicycles?

A. The used batteries will pollute the environment.

B. The dangerous speed.

C. More accidents and slow traffic

D. Some producers neglect their recycling responsibility

B

Scientists estimate that more than 60 percent of cancer deaths in the United States are preventable through lifestyle changes. Although there is no certain way to avoid all cancers, reducing individual risk factors significantly decreases the likelihood of getting many forms of this dangerous disease.

The American Chemical Society estimates that smoking causes nearly 30 percent of all cancer deaths in the United States-that is, about 166,000 cancer deaths each year. All cancer deaths caused by tobacco smoking could be prevented completely by not smoking and not using smokeless tobacco. For those who already smoke, quitting will reduce the risk of developing cancer. Studies show that after about ten years of not smoking, a past smoker’s risk lowers to about the level of those who have never smoked.

After quitting smoking, eating a healthy diet is the best way to lower the risk of cancer. Certain foods have been found to protect against cancer. Among these foods are broccoli, cauliflower, cabbage, tomatoes, soy products, and foods high in vitamins A, C, and E. In addition, green and possibly black teas contain compounds that protect the body from cancer-causing substance.

To lower cancer risk, diets should include little or no red meat. Other foods to avoid or consume in moderation include sugar, saturated fat from animal products, and salt. Added fats and oils should come from vegetables, such as olives or corn, rather than from animal sources. Carbohydrates(碳水化合物)should come from whole grains, such as brown rice and whole wheat bread, rather than from processed foods, such as white rice and white bread.

The risk of cancer of the esophagus(食道)increases with heavy alcohol consumption, and many studies suggest that consuming alcoholic drinks increases the risk of breast cancer as well. Studies show that limiting intake to two drinks a day for men, and one drink per day for women, reduces cancer risk.

Low levels of physical activity have been implicated in colon(肠道)cancer. Moderate activity for 30 minutes a day enhances the immune system, shortens the time food takes to move through the intestines(肠), and changes body composition and hormone levels. Researchers are studying how these effects might lower cancer risk.

58. In the last paragraph but one, the sentence "To cater to the consumer desire for higher speed," the underlined phrase can best be replaced by ___________.

A. satisfy　　　　　　　 B. delay　　　　　　　　 C. promote　　　　　　　　　 D. haste

57. Which of the following is NOT true according to the passage?

A. Beijing will be the first city in China to ban electric bicycles starting this year.

B. Zhuhai rather than Beijing is the first to make law to forbidden the use of electric bicycle.

C. More than one local government has decided to ban the use of electric bicycles.

D. Shanghai is not one of the cities, which have determined to ban electric bicycles.

56. What is the author's attitude towards banning electric bicycles？

A . Positive　　　　　 B. Negative　　　　　 C. Neutral　　　　　　　　　　 D. Not mentioned

54. A. luckiest　　　 　 　　B. cleverest 　 　　C. bravest　 　　　 D. best

53. A. found　 　　　B. got　 　　　　　 C. felt　 　　　　　 D. solved

52. A. burst　　 　　　 B. hold　　　 　　　 　　C. help　　　 　　　 　　D. prevent

51. A. harmed 　 　　B. helped　　 　　　 C. broke　　 　　　 D. touched

50. A. listened　　　 　 　　B. danced　　 　　　 C. laughed　 　　　 D. remembered