单选题 Yesterday Mary offered to help me to learn Japanese ______.

单选题Assuming that a constant travel-time budget, geographic constraints and short-term infrastructure constraints persist as fundamental features of global mobility, what long-term results can one expect7 In high-income regions, (41) North America, our picture suggests that the share of traffic (42) sup plied by buses and automobiles will decline as high-speed transport rises sharply. In developing countries, we (43) the strongest increase to be in the shares first for buses and later for automobiles. Glob ally, these (44) in bus and automobile transport are partially offsetting. In all regions, the share of low-speed rail transport will probably continue its strongly (45) decline. We expect that throughout the period 1990—2050, the (46) North American will continue to de vote most of his or her 1. 1-hour travel-time (47) to automobile travel. The very large demand (48) air travel (or high-speed rail travel) that will be manifest in 2050 (49) to only 12 minutes per person a day; a little time goes a long way in the air. In several developing regions, most travel (50) in 2050 will still be devoted to nonmotorized modes. Buses will persist (51) the primary form of motorized transportation in developing countries for decades. (52) important air travel becomes, buses, automobiles and (53) low-speed trains will surely go on serving vital functions. (54) of the super-rich al ready commute and shop in aircraft, but average people will continue to spend most of their travel time on the (55) .

单选题The trumpet player was certainly loud. But I wasn"t bothered by his loudness ______ by his lack of talent.

单选题The everyday life of a policeman or detective is ______.

单选题Waste paper and glasses could be ______ while most plastic could not.

单选题根据下面资料，回答问题。When I was at school， our teacher told the class "You are what you eat. " My friends and I would laugh and call each other "hamburger"（汉堡） and "biscuits". Our teacher was trying to show us

单选题It is commonly believed that in the United States school is where people get an education. Nevertheless, it has been said that today children interrupt their education to go to school. The 42 between schooling and education implied by this remark is important. Education is much more open-ended and all-inclusive than schooling. Education has no 43 . It can take place anywhere, whether in the shower or on the job, whether in a kitchen or on a tractor. It includes both the 44 learning that takes place in school and the whole universe of informal leaning. The agents of education can 45 from a revered grandparent to the people debating politics on the radio, from a child to a distinguished scientist. Whereas schooling has a certain predictability, education quite often produces surprises. A(n). 46 conversation with stranger may lead a person to discover how little is known of other religions. People are 47 in education from infancy on. Education, then, is a very broad, inclusive term. It is a lifelong process, a process that starts long before the start of school and one that should be an integral part of one's entire life. Schooling, on the other hand, is a specific, 48 process, whose general pattern varies little from one setting to the next. Throughout a country, children arrive at school at 49 the same time, take assigned seats, use similar textbooks, take exams, and so on. The slices of reality that are to be learned, whether they are the alphabet or an understanding of the workings of governments, have usually been limited by the boundaries of the 50 being taught. For example, high-school students know that they are not likely to 51 out in their classes the truth about political problems in their communities or what the newest filmmakers are experimenting with. A．formalized B．accurately C．figure D．stretch E．engaged F．similarity G．subject H．automatic I．chance J．range K．distinction L．divisional M．approximately N．bounds O．formal

单选题Concern over the economic situation was ______ in the government budget.

单选题There are millions of left-handed.people in the world.A number of them got together in1975 to form an association called Left-handers International.The purpose of the organization is to fight discrimi

单选题Mr. Li is the present ______ of the presidential chair of the company.

单选题The environmental balance among ecological communities is Uexceedingly/U complex.

单选题In spring and summer, the most popular ______ is tennis. A. work B. activity C. games D. sport

单选题Good leadership requires you to surround yourself with people of ______ perspectives who can disagree with you without feat of revenge.

单选题 NASA is releasing several images taken by the Hubble Space Telescope, which is the closest yet look at the red planet. Altogether there are four images, which show the entire planet. Each view shows the planet as it completes one quarter of its daily rotation. In these views the north polar cap is turned toward the Earth and is clearly visible at the top of each picture. The images were taken in the middle of the Martian northern summer, when the polar cap was at its smallest size. During this season the sun shines continuously on the polar cap. Previous spacecraft observations have shown that this summertime polar cap is composed of water ice, just like Earth's polar caps. The Hubble Telescope pictures reveal that great changes have occurred on the surface of Mars in the past 20 years. The Martian surface is ever changing. Some regions that were dark 20 years ago are now bright red; some areas that were bright red are now dark. Winds move sand and dust from region to region, often in huge dust storms. Over long timescales many of the larger bright and dark markings remain stable, but smaller details come and go as they are covered and then uncovered by sand and dust.

单选题We desire that the tour leader ______ us immediately of any change in plans.

单选题The doctors were worried because the patient did not Urecuperate/U as rapidly as they had expected.

单选题If you have never planted anything, you won't be able to know the pleasure of watching the thing you have planted ______. A. grow B. to grow C. growing D. to be growing

单选题When we heard this story, we couldn't help______.

单选题"Did you cheat in the exanimation?" "Yes, but ______ it."

单选题You ______yesterday if you were really serious about the job. A. ought to come B. ought have come C. ought come D. ought to have come