happier existence. And it's easy to think and act honorably again when we're happy. While the positive cycle can be difficult to start, once it's started, it's easy to continue. Keeping on doing good deeds brings us peace of mind, which is important for our happiness.
46. According to the passage, the positive action in the example contributes to our
A. self-respect B. financial rewards C. advertising ability D. friendly relationship
47. The author thinks that keeping silent about the uncharged item is equal to___.
A. lying B. stealing C. cheating D. advertising
48. The phrase "bringing the error to the clerk's attention" (in para. 5) means___.
A. telling the truth to the clerk B. offering advice to the clerk
C. asking the clerk to be more attentive D. reminding the clerk of the charged item
49. How will we feel if we let the clerk know her mistake?
A. We'll be very excited. B. We'll feel unfortunate.
C. We'll have a sense of honor. D. We'll feel sorry for the clerk.
50. Which of the following can be the best title of this passage.*
A. How to Live Truthfully B. Importance of Peacefulness
C. Ways of Gaining Self-respect D. Happiness through Honorable Actions
C
Malaria, the world's most widespread parasitic(寄生虫引起的) disease, kills as many as three million people every year—almost all of whom are under five, very poor, and African. In most years, more than five hundred million cases of illness result from the disease, although exact numbers are difficult to assess because many people don't (or can't) seek care. It is not unusual for a family earning less than two hundred dollars a year to spend a quarter of its income on malaria treatment, and what they often get no longer works. In countries like Tanzania, Mozambique, and the Gambia, no family, village, hospital, or workplace can remain unaffected for long.
Malaria starts suddenly, with violent chills, which are soon followed by an intense fever and, often, headaches. As the parasites multiply, they take over the entire body. Malaria parasites live by eating the red blood cells they infect (感染). They can also attach themselves to blood vessels in the brain. If it doesn't kill you, malaria can happen again and again for years. The disease passed on to humans by female mosquitoes infected with one of four species of parasite. Together, the mosquito and the parasite are the most deadly couple in the history of the earth—and one of the most successful. Malaria has five thousand genes, and its ability to change rapidly to defend itself and resist new drugs has made it nearly impossible to control. Studies show that mosquitoes are passing on the virus more frequently, and there are more outbreaks in cities with large populations. Some of the disease's spread is due to global warming.
For decades, the first-choice treatment for malaria parasites in Africa has been chloroquine, a chemical which is very cheap and easy to make. Unfortunately, in most parts of the world, malaria parasites ha上一页 [1] [2] [3] [4] [5] [6] [7] [8] 下一页 |
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