The train was crowded and I had to get into a carriage ____ already seven other people.
| A．when there were | B．which there were |
| C．that there were | D．where there were |
高三英语单项填空简单题
The train was crowded and I had to get into a carriage ____ already seven other people.
| A．when there were | B．which there were |
| C．that there were | D．where there were |
高三英语单项填空简单题查看答案及解析
Out of the train_______, well-dressed and waving to the crowd.
A． a tall man stepped
B． was stepping a tall man
C． did a tall man step
D． stepped a tall man
高三英语单项填空简单题查看答案及解析
Out of the train_______, well-dressed and waving to the crowd.
A. a tall man stepped B. was stepping a tall man
C. did a tall man step D. stepped a tall man
高三英语单项填空中等难度题查看答案及解析
Out of the train_______, well-dressed and waving to the crowd.
A. a tall man stepped B. was stepping a tall man
C. did a tall man step D. stepped a tall man
高三英语单项填空困难题查看答案及解析
Out of the train_______, well-dressed and waving to the crowd．
A．a tall man stepped B．was stepping a tall man
C．did a tall man step D．stepped a tall man
高三英语单项填空中等难度题查看答案及解析
It was the skills that he had acquired at his training period________enabled him to get such a high post in that world-famous company.
A．when B．that C．who D．which
高三英语单项填空简单题查看答案及解析
We missed our train, and ________ the next train was delayed, ________ we had to wait for another two hours.
A．on top of that; so B．as a result; thus
C．what was worse; therefore D．apart from that; then
高三英语单项填空中等难度题查看答案及解析
She said she was unlucky _______ the train, and had to spend another day here.
A. missing B. to have missed
C. to miss D. having missed
高三英语单项填空中等难度题查看答案及解析
As millions of Americans crowd into the gym armed with New Year’s resolutions to get in shape, medical experts are offering an additional reason for exercise: Regular workouts may help fight off colds and flu, reduce the risk of certain cancers and chronic diseases and slow the process of aging.
Physical activities have long been known to help maintain a healthy weight and reduce stress. Now, a growing body of research is showing that regular exercise—as simple as a brisk 30-to-45-minute walk five times a week—can boost the body’s immune system, increasing the circulation of natural killer cells that fight off viruses and bacteria. And exercise has been shown to improve the body’s response to the influenza vaccine (疫苗), making it more effective at keeping the virus at bay.
Medical experts warn inactivity poses as great a health risk as smoking, resulting in heart disease, cancer, depression, and diabetes. The Centers for Disease Control and Prevention says quite a few U.S. adults do not engage in any leisure-time physical activity.
Even slim people who are inactive are at high risk of death and disease. So while reducing obesity is an important goal, “the better message would be to get everyone to walk 30 minutes a day” says Robert Sallis, co-director of sports medicine at Fontana Medical Center. “We find it necessary to refocus the national message on physical activity, which can have a bigger effect on health than losing weight.”
Regular exercise has been shown to prevent the ongoing damage done to cells, tissues and organs that underlies many chronic conditions. Building on that earlier research, scientific studies are now suggesting that exercise-induced changes in the body’s immune system may protect against some forms of cancer.
Researchers are also investigating whether exercise can influence aging in the body. In particular, they are looking at whether exercise lengthens telomeres, the strands of DNA at the tips of chromosomes. When telomeres get too short, cells can no longer divide and they become inactive, a process associated with aging, cancer and a higher risk of death.
A study, published in Circulation, the medical journal of the American Heart Association, concluded that physical activity has an anti-aging effect at the cellular level, suggesting exercise could prevent aging of the cardiovascular(心脑血管) system.
The guidelines, developed by the Department of Health and Human Services, recommend that adults get at least two hours and 30 minutes weekly of moderate-intensity aerobic(有氧的) physical activity, or one hour and 15 minutes a week of vigorous-intensity aerobic exercise, or an equivalent combination of both. The guidelines also say that additional health benefits can be obtained from as much as doubling the minimum recommendation for aerobic exercise.
1.What is the main purpose of many Americans who take exercise?
A. To have a good figure. B. To make them strong-minded.
C. To cure some common diseases. D. To prevent themselves getting old.
2.It can be inferred from the passage that __________.
A. natural killer cells strengthen the body’s immune system
B. regular exercise can remove the viruses and bacteria
C. obesity has become a social problem in America
D. American people need to attach more importance to physical exercise
3.How can physical activity stop aging?
A. By preventing cell division. B. By getting rid of aging cells.
C. By making telomeres longer. D. By repairing the damaged organs.
4.What might be the best title for the passage?
A. New Studies about Physical Exercise B. The Hidden Benefits of Exercise
C. How to Free Ourselves from Diseases? D. Lose Weight or Keep Healthy?
高三英语阅读理解困难题查看答案及解析
It was lunchtime and I walked into a small branch bank on the West Side. I had come to 1 a checking account. The only officer on 2 was a fortyish black man, standing 3 a small counter from a young white boy who was wearing a V-necked sweater. I thought I was especially 4 of the boy because he looked more like from a prep school than a 5 in a West Side bank.
The boy continued to 6 my attention because of what happened next. He was holding an open savings-account book and 7 an expression of disappointment. “But I don’t understand. I opened the account myself, so why can’t I 8 any money?” the boy said, his voice breaking.
“I know it is, but those are the rules. I’ve already explained to you that a fourteen-year-old is not 9 to withdraw money without a letter from his parents,” the officer explained patiently.
Suddenly I noticed the 10 had a series of small deposits (存款) and withdraws. Then I questioned the officer, “How do you 11 that? Why did you let him withdraw money before, but not now?” He looked 12. “Because the tellers were not aware of his age before and now they are. It’s really very 13.” I turned to the boy with a shrug. “You’re really getting 14,” I said. “You ought to get your parents to come here and protest.” The boy looked destroyed. 15, he put his savings book in a rear-pocket and walked out of the bank.
The officer turned to me. “You know,” he said, “you really shouldn’t have got 16.” I couldn’t believe what he was saying. “We were 17 this morning that some neighborhood bully has been shaking down (敲诈) this boy for more than a month. The guy was 18 him to take money out every week and hand it over. The poor kid was 19 too scared to tell anyone. Anyway, the police are on the case and they’ll probably make a(n) 20 today.”
“You mean there is no rule about being too young to withdraw money from a savings account?”
“Not that I ever heard of. Now, sir, what can we do for you?”
1. A．make B．open C．buy D．choose
2. A．duty B．board C．display D．business
3. A．on B．after C．over D．across
4. A．sure B．proud C．aware D．afraid
5. A．guard B．customer C．clerk D．manager
6. A．attract B．pay C．attach D．control
7. A．achieving B．finding C．reaching D．wearing
8. A．use B．spend C．withdraw D．bank
9. A．supported B．inspired C．encouraged D．allowed
10. A．letter B．account C．note D．message
11. A．think B．explain C．do D．claim
12. A．annoyed B．disappointed C．confused D．amused
13. A．difficult B．strange C．fantastic D．simple
14. A．obeyed B．stolen C．cheated D．caught
15. A．Happily B．Silently C．Cheerfully D．Nervously
16. A．interacted B．interrupted C．involved D．infected
17. A．occupied B．discovered C．suggested D．informed
18. A．rushing B．forcing C．requesting D．begging
19. A．hardly B．unwillingly C．apparently D．eagerly
20. A．arrest B．sentence C．apology D．difference
高三英语完型填空中等难度题查看答案及解析