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If the temperature drops low enough, oil will not flow, （） just tell us the temperature.
A . Hash point
B . Viscosity
C . Pour point
D . Cetane number
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One and a half hour（）since we arrive. No one has come to meet us.
A . have passed
B . was passed
C . pass
D . has passed
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Two thousand dollars（）enough for the car
A . being
B . were
C . are
D . i
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Two thousand dollars（）enough for the car.
A . are
B . were
C . being
D . i
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13.Four and half hours of discussion took us up to midnight,and break for cheese,chocolate and tea with sugar.
A . a;a
B . the; the
C . 不填；the
D . a;不填
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( ), ( ) and ( ) are the three branches of the US.government.
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( ), ( ) and ( ) are the three branches of the US. government.
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I waited for three long hours______________ told to come again the next day.
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The heavy traffic ______ us for half an hour.
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It took us over an hour ________ along the street.
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The three hours I spent in the school library__________ my old passion for reading.
A.brought about
B.brought over
C.brought up
D.brought back
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Working women don't have enough time to prepare three meals a day so that families depend on traditional frozen food.
A．Y
B．N
C．NG
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The most common method for pricing out non-burdened labor hours for a three year project would be to:
A . Price out the hours at the actual salary of the people to be assigned.
B . Price out the work using a company-wide average labor rate.
C . Price out the work using a functional group average labor rate.
D . All of the above.
E . A and B only.
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Five days enough for us to complete the assignment（）
A．have
B．are
C．is
D．has
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听力原文：Man: Eleven hours on the road is long enough for anyone, especially in this hot weather. I'm anxious to get back to the family house. But I don't think we should overdo it. Let's rest for a while, shall we？
(21)
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听力原文：W: Since Professor Williams is willing to give us a three-day extension to finish the project, maybe he'll also give us a few more days for this assignment.
M: Betty, let's not push our luck! OK？
Q: What does the man mean？
(13)
A．They shouldn't make too many requests.
B．They should ask for further extension.
C．They should finish the project as scheduled.
D．They should not try their luck.
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Common sense would tell us that physically active children may be more likely to become active and healthy adults.In the United States, elementary and middle schools are advised to give students two and a half hours of physical activity a week.That is what the Centers for Disease Control and Prevention and the American Heart Association recommend (推荐). They say high schools should provide about four hours of physical activity each week. Yet many schools across the country have reduced their physical education programs. Criticism of the cuts has led in some places to efforts to give students more time for exercise, not less.
The future health of Americans may depend on it. Just this week, a study reported that life expectancy (预期寿命) has fallen or is no longer increasing in some parts of the United States. The situation is worst among poor people in the southern states, and especially women. Public health researchers say it is largely the result of increases in obesity (肥胖), smoking and high blood pressure. They also blame differences in health services around the country.
In 2006, a study found that only four percent of elementary schools provided daily physical education all year for all grades. This was true of eight percent of middle schools and two percent of high schools. The study also found that 22 percent of all schools did not require students to take any P. E. (体育课).
Charlene Burgeson is the executive director of the National Association for Sport and Physical Education. She says one problem for P. E. teachers is that schools are under pressure to put more time into academic subjects. Also, parents may agree that children need exercise in school. Yet many parents today still have bad memories of being chosen last for teams because teachers favored the good athletes in class.
But experts say P. E. classes have changed. They say the goal has moved away from competition and toward personal performance, as a way tp build a lifetime of activity. These days, teachers often lead activities like weight training and yoga. Some parents like the idea of avoiding competitive sports in P.E class. Yet others surely dislike that idea. In the end, schools may find themselves in a no-win situation.
Why are schools recommended to give students certain time for sports？
A．Because different schools set up different physical education programs.
B．Because the physical activity of children will influence their health in adulthood.
C．Because nowadays children spend too much time on their studies.
D．Because only four percent of elementary schools provided daily physical education.
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Therailwaystationiswithin__________drivefromhere．[A]threehours[B]three-hours[C]three-hour[
The railway station is within __________ drive fromhere． [A]three hours[B]three-hours[C]three-hour[D]three-hour-long
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It took my mother an hour（）a meal for us
A.to prepare
B.preparing
C.to prepared
D.in preparing
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There is not _________ for us ________.room enough ; to live inB．enough room; to live in C．room e
.There is not _________ for us ________.room enough ; to live in B．enough room; to live in C．room e
A．room enough ; to live in
B．enough room; to live in
C．room enough ; to live in
D．enough room; live
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It took us about two hours and a half to finish the work.（）
A.as much as
B.more than
C.less than
D.more or less than
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Three hours passed, and we were still unable to ____John of his son’s guilt
A．convince
B．inform
C．warn
D．convict
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Two hours _____ enough for us to finish the job.
A．is
B．are
C．be
D．were
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The professor’sA lecture on grammar wasB three hours longC and Sam felt very boringD
