更多"来源:考试大-职称英语考试第二篇Study Says Dogs Can"的相关试题:
[单项选择]来源:考试大-职称英语考试第二篇Study Says Dogs Can Smell Cancer
Dogs are known for their sense of smell.They can find missing people and things like bombs and illegal drugs.Now a study suggests that the animal known as man’s best friend can even find bladder(膀胱)cancer.
Cancer cells are thought to produce chemicals with unusual odors(气味).Researchers think dogs have the ability to smell these odors,even in very small amounts,in urine(尿).The sense of smell in dogs is thousands of times better than in humans.
The study follows reports of cases where,for example,a dog showed great interest in a growth on the let of its owner.The mole(痣)was later found to be skin cancer.
Carolyn Willis led a team of researchers at Amersham Hospital in England.They trained different kinds of dogs for the experiment.The study involved urine collected from bladder cancer patients,from people with other diseases and from healthy people.
Each dog was tested eight times.In each test there were seven samples f
A. 56%
B. 41%
C. 22%
D. 54%
[单项选择]Promising Results from Cancer Study
A new experimental vaccine (疫苗) has shown promising results in the fight against lung cancer. In a small Texas-based study, a vaccine developed by scientists at Baylor University Medical Centre in Dallas, USA, cured lung cancer in some patients and slowed the progress of the disease in others.
Researchers have reported encouraging findings from this small study. Forty-three patients suffering from lung cancer were involved in these trials. Ten of these patients were in the early stages and thirty-three in the advanced stages of the disease. They were injected with the vaccine every two weeks for three months, and were carefully monitored for three years. In three of the patients in the advanced stages of cancer, the disease disappeared and in the others, it did not spread for five to twenty-four months. However, no great difference was seen in the patients in the early stages of the illness.
This new vaccine uses the patients’ own immune system. I
A. Right
B. Wrong
C. Not mentioned
[单项选择]第二篇
Road Trip Vacations
It’s summer. In the United States, it’s the season of swimming pools, barbeques (户外烤肉), camping and road trips.
Road trip vacations where the car journey is part of the fun are especially popular with college students, who like to explore the country on wheels. These budget trips are ideal for students who often have plenty of free time but little money.
"Ever since I went to college, I’ve been traveling around a lot, exploring the country," said Austin Hawkins, a 19-year-old college student from New York. This summer, Hawkins and his friends have spent weekends traveling in New England.
The best part about car trips, said Hawkins, is that you can be spontaneous. "On a road trip, if you get interested in things you see along the way you can stop and explore."
Matt Roberts, a 20-year-old student from Ohio who drove to Montreal, Canada, agrees. "With road trips you don’t have to plan in advance, you
A. snow storm.
B. hurricane.
C. mist.
D. fog.
