题目内容
（请给出正确答案）
A．since
B．when
C．after
D．before
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更多“Scientists say it may be five or ten years ______ it is possible to test this medicine on”相关的问题
A) since
B) before
C) after
D) when
A．economical
B．economy
C．economic
D．economics
A．performing by Melissa were
B．it was known that Melissa's performances were
C．knowing that Melissa's performances were
D．Melissa knew that performing was
So I wrote a nice holiday greeting to this man who, in my imagination, fires The New York Times from his bike aimed at our front door, causing more noise with mere newsprint than most people manage with sophisticated black market fireworks.
With a start, I realized that perhaps the reason for the 4 a.m. wake-up noise was not ordinary rudeness but carefully executed spite: I had not tipped Raoul in Christmases past. I honestly hadn't realized I was supposed to. This was the first time he'd used the card tactic. So I got out my checkbook. Somewhere along the line, holiday tipping went from an optional thank-you for a year of services to a Mafia-style. protection racket(收取保护费的黑社会组织).
Several days later, I was bringing our garbage bins back from the curb when I noticed an envelope taped to one of the lids. The outside of the envelope said MICKEY. It had to be another tip request, this time from our garbage collector. Unlike Raoul, Mickey hadn't enclosed his own Christmas card from me. In a way, I appreciated the directness. "I know you don't care how merry my Christmas is, and that's fine", the gesture said. "I want $30, or I'll 'forget' to empty your garbage bin some hot summer day".
I put a check in the envelope and taped it back to the bin. The next morning, Ed noticed that the envelope was gone, though the trash hadn't yet been picked up: "Someone stole Mickey's tip!" Ed was quite certain. He made me call the bank and cancel the check.
But Ed had been wrong. Two weeks later, Mickey left a letter from the bank on our steps. The letter informed Mickey that the check, which he had tried to cash, had been cancelled. The following Tuesday morning, when Ed saw a truck outside, he ran out with his wallet. "Are you Mickey?"
The man looked at him with scorn. "Mickey is the garbageman. I am the recycling". Not only had Ed insulted this man by hinting that he was a garbageman, but he had obviously neglected to tip him. Ed ran back inside for more funds. Then he noticed that the driver of the truck had been watching the whole transaction. He peeled off another twenty and looked around, waving bills in the air. "Anyone else"?
Had we consulted the website of the Emily Post Institute, this embarrassing breach of etiquette(礼节) could have been avoided. Under "trash/recycling collectors" in the institute's Holiday Tipping Guidelines, it says: "$10 to $30 each". You may or may not wish to know that your pet groomer, hairdresser, mailman and UPS guy all expect a holiday tip.
The newspaper deliveryman put a blank card inside the envelope because______.
A．he forgot to write a few words on it
B．he wanted the couple to send it back
C．he used it to ask for a Christmas tip
D．he was afraid of asking for a tip in person
Fried foods have long been frowned upon. Nevertheless, the skillet(平底煎锅) is about our handiest and most useful piece of kitchen equipment. Sturdy lumberjacks(伐木工) and others engaged in active labor requiring 4,000 calories per day or more will take approximately one-third of their rations prepared in this fashion. Meat, eggs, and French toast cooked in this way are served in millions of homes daily. Apparently the consumers are not beset with more signs of indigestion than afflict those who insist upon broiling, roasting, or boiling. Some years ago one of our most eminent physiologists investigated the digestibility of fried potatoes. He found that the pan variety was more easily broken down for assimilation than when deep fat was employed. The latter, however, dissolved within the alimentary tract more readily than the boiled type. Furthermore, he learned, by watching the progress of the contents of the rate of digestion. Now all this is quite in contrast with "authority." Volumes have been written on nutrition, and everywhere the dictum has been accepted--no fried edibles of any sort for children. A few will go so far as to forbid this style. of cooking wholly. Now and then an expert will be bold enough to admit that he uses them himself, the absence of discomfort being explained on the ground that he posses a powerful gastric apparatus. We can of course sizzle perfectly good articles to death so that they will be leathery and tough. But thorough heating, in the presence of shortening, is not the awful crime that it has been labeled. Such dishes stimulate rather than retard contractions of the gall bladder. Thus it is that bile mixes with the nutriment shortly after it leaves the stomach.
We don't need to allow our foodstuffs to become oil soaked, but other than that, there seems to be no basis for the widely heralded prohibition against this method. But notions become fixed. The first condemnation probably arose because an "oracle" suffered from dyspepsia(消化不良) which he ascribed to some fried item on the menu. The theory spread. Others agreed with him, and after a time the doctrine became incorporated in our textbooks. The belief is now tradition rather than proved fact. It should have been refuted long since, as experience has demonstrated its falsity.
This passage focuses on ______.
A．why the skillet is a handy piece of kitchen equipment
B．how the experts can mislead the public in the area of food preparation
C．the digestibility of fried foods
D．why fried foods have long been frowned upon
Now a new anti-jetlag system is【C8】______ that is based on proven【C9】______ pioneering scientific re- search. Dr. Martin Moore-Ede has【C10】______ a practical strategy to adjust the body clock much sooner to the new time zone【C11】______ controlled exposure to bright light. The time zone shift is easy to accomplish and eliminates【C12】______ of the discomfort of jetlag. A successful time zone shift depends on knowing the exact times to either【C13】______ or avoid bright light. Exposure to light at the wrong time can actually make jetlag worse. The proper schedule【C14】______ light exposure depends a great deal on【C15】______ travel plans.
Data on a specific light itinerary and the individual's sleep【C16】______ are used to produce a Trip Guide with【C17】______ on exactly when to be exposed to bright light. When the Trip Guide calls【C18】______ bright light you should spend time outdoors if possible. If it is dark outside, or the weather is bad,【C19】______ you are on an aeroplane, you can use a special light device to provide the necessary light【C20】______ for a range of activities such as reading, watching TV or working.
【C1】
A．for
B．from
C．to
D．of
As anxiety-makers, examinations are second to none. That is because so much depends oil them. They are the mark of success of failure in our society. Your whole future may be decided in one fateful day. It doesn't matter that you weren't feeling very well, or that your mother died. Little things like that don't count: the exam goes on. No one can give of his best when he is in mortal terror, or after a sleepless night, yet this is precisely what the examination system expects him to do. The moment a child begins school, he enters a world of vicious competition where success and failure are clearly defined and measured. Can we wonder at the increasing number of "drop outs": young people who are written off as utter failures before they have even embarked on a career? Can we be surprised at the suicide rate among students?
A good education should, among other things, train you to think for yourself. The examination system does anything but that. What has to be learnt is rigidly laid down by a syllabus, so the student is encouraged to memorize. Examinations do not motivate a student to read widely, but to restrict his reading; they do not enable him to seek more and more knowledge, but induce cramming. They lower the standards of teaching, for they deprive the teacher of all freedoms. Teachers themselves arc often judged by examination results and instead of teaching their subjects, they are reduced to training their students in exam techniques which they despise. The most successful candidates are not always the best educated; they are the best trained in the technique of working under duress.
The results on which so much depends are often nothing more than a subjective assessment by some anonymous examiner. Examiners are only human. They get tired and hungry; they make mistakes. Yet they have to mark stacks of hastily scrawled scripts in a limited amount of time. They work under the same sort of pressure as the candidates. And their word carries weight. After a judge's decision you have the right Of appeal, but not after an examiner's. There must surely be many simpler and more effective ways of assessing a person's true abilities. Is it cynical to suggest that examinations are merely a profitable business for the institutions that run them? This is what it boils down to in the last analysis. The best comment on the system is this illiterate message recently scrawled on a wall: I were a teenage drop-out and now I are a teenage millionaire.
The main idea of this passage is ______.
A．examinations exert a pernicious influence on education
B．examinations are ineffective
C．examinations are profitable for institutions
D．examinations are a burden on students
A．Though having never acted
B．As he had never acted
C．Despite he had never acted
D．In spite of his never having acted
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