填空题In most situations, we measure fuel load by tons per hectare.

填空题While playing back Karaoke, if there is acoustic feedback, we should turn the micro phone volume down and put the microphone farther away from the speaker.

填空题Doctors warned against chewing tobacco as a ________________ (吸烟的替代品).

填空题Success in school or at work ______ (与其说是靠天资，好不如说靠勤奋).

填空题Teachers always plan down to the minute what their students will be doing. This is good for kids, because it teaches them to stay on task and follow a (47) . But most homes aren't run this way. If parents do plan their children's lives minute by minute, what happens when that child grows up and goes to college? At some point, kids need to learn to manage their own time. This can be one of the valuable skills you help your kids develop outside of school. But it (48) won't happen all by itself, because there's a big (49) that happens when kids leave the structured school environment and come home. If you have a kid stay alone at home, think hard about trying to find an adult who can be there and provide the support your child needs. If a supportive adult isn't (50) , an expert named Martin recommends you find an after-school program led by (51) professionals who will engage them in creative activities, (52) them with healthy snacks, and (53) them with their schoolwork. If you are at home on the contrary, take some break after the guys get (54) on diversions (解闷,娱乐), because it's hard to stop and do something like homework. "If that little bit of downtime(工间休息时间) is television, good luck…, getting them to do their homework." says a professor of child development at California State University, "TV is addictive(上瘾的)." A better way to help your child unwind is with a healthy (55) . "Wait until dinner, make a plate full of energizing food. You could even dish up part of the dinner you're preparing a little early for the kids," she says. While you're sharing a snack, you can make a list of what your kids will get to do during their study breaks. The types of breaks recommended include shooting baskets, getting a drink, using the bathroom, or even playing a quick card game with parents. Your kids can be the ones to decide which breaks they'd like to take. But, as Freimuth says, your children will have to be honest about what kind of break will energize them and not (56) their momentum(动力).A. rhythm I) formulaB. snack J) nourishC. guaranteed K) cultivateD. started L) availableE. generally M) experienced F. upset N) transitionG. alternatively O) assist H) schedule

填空题She tried to _____________ (将身体椅出窗外) to see the parade more clearly.

填空题The word laser stands for "light amplification by stimulated emission of radiation". To many people lasers are very{{U}} (36) {{/U}}, but a laser is simply a{{U}} (37) {{/U}}that produces a very strong light. The light from a laser is called{{U}} (38) {{/U}}light because it is light that moves in only one direction. In contrast, incoherent light, like the light form the sun or a light{{U}} (39) {{/U}}, moves away from its{{U}} (40) {{/U}}in all directions and{{U}} (41) {{/U}}in a narrow beam. As soon as the laser was developed, scientists began thinking of practical{{U}} (42) {{/U}}for it. One of the earliest uses was to make extremely{{U}} (43) {{/U}}measurements of distance and speed. As time passed, many more applications for the laser were developed.{{U}} (44) {{/U}}.From laser printers to technology by which whole encyclopedias of information can be stored on a laser disk (called a CD-ROM) and read by a computer, lasers are revolutionizing computers. Lasers have also made a big difference in the way telephones work. Instead of changing sound waves to electricity that travels through copper wire,{{U}} (45) {{/U}}One such fiber can carry more than a million conversations at the same time! {{U}} (46) {{/U}}.

填空题At the bottom of the world lies a{{U}} (36) {{/U}}continent still wrapped in the Ice Age and, until recent times,{{U}} (37) {{/U}}to man. It is a great land miss with mountain ranges whose (38) and elevation (高度) are still uncertain. Much of the continent is a complete{{U}} (39) {{/U}}on our maps. Man has explored, on foot, less than one percent of its area. Antarctica differs{{U}} (40) {{/U}}from the Arctic regions. The Arctic is an ocean, covered with{{U}} (41) {{/U}}pack ice and bordered by the land masses of Europe, Asia, and North America. The Antarctic is a continent almost as large as Europe and Australia{{U}} (42) {{/U}}, centred roughly on the South Pole and{{U}} (43) {{/U}}by the most unobstructed (无障碍的) water areas of the world-the Atlantic, Pacific, and Indian Oceans. The continental ice sheet is more than two miles high in its centre; thus, the air over the Antarctic is far more refrigerated than it is over the Arctic regions.{{U}} (44) {{/U}}.And it renders unlivable those regions whose counterparts at the opposite end of the globe are inhabited.{{U}} (45) {{/U}}. This area includes most of Alaska, Siberia, and Scandinavia-a region rich in forest and mining industries{{U}} (46) {{/U}}.

填空题Florida panthers are the most known animals associated with the Everglades.

填空题We need a chairman ______ whom everyone has confidence.

填空题 A college education is an investment in the future. But it can be a {{U}}(36) {{/U}} investment. The College Board {{U}}(37) {{/U}} that the costs at a four-year public college in the United States increased 10 percent this past school year. That was less than the {{U}}(38) {{/U}} percent increase the year before, but still much higher than the {{U}}(39) {{/U}} rate. Public colleges and universities still cost a lot less than private ones. Financial aid often helps. But financial {{U}}(40) {{/U}} tell parents to start college {{U}}(41) {{/U}} plans when their child is still very young. All 50 states and the District of Columbia {{U}}(42) {{/U}} what are called 5-20-9 plans. These plans are named after the part of the federal tax law that created them in 1996. States use private investment companies to {{U}}(43) {{/U}} most programs. Every state has its own rules governing 5-20-9 plans. Some of the plans are free of state taxes. And all are free of federal taxes. {{U}}(44) {{/U}}. {{U}} (45) {{/U}}. Families must decide how aggressively they want to put money into stocks, bonds or other investments. {{U}} (46) {{/U}}. This kind of savings program is called a prepaid tuition plan.

填空题Many U.S. big companies ______ (转向亚洲、非洲求取廉价劳动力).