填空题Even if you have electricity and water, you still cannot produce hydrogen everywhere.

填空题The bacteria depend on worms for hydrogen sulfide in the symbiotic relationship.

填空题 Scientists have developed a new cancer drug. So far, they have tested it only on{{U}} (36) {{/U}}animals. The drug is designed to{{U}} (37) {{/U}}and kill cancer cells but not healthy cells. First, the drug enters the cancer and destroys the supply of blood. Then it releases{{U}} (38) {{/U}}to destroy the cancer cells. Researchers at the Massachusetts Institute of Technology in Cambridge carried out the study. The{{U}} (39) {{/U}}appeared in Nature{{U}} (40) {{/U}}. A school news release called the drug an "anti-cancer smart bomb." Ram Sasisekharan is a professor at M.I.T. He says his team had to{{U}} (41) {{/U}}three problems. They had to find a way to destroy the blood vessels, then to{{U}} (42) {{/U}}the growth of new ones. But they also needed the blood vessels to supply chemicals to destroy the cancer. So, the researchers designed a two-part "nanocell". The cell is{{U}} (43) {{/U}}in nanometers, or one thousand millionth of a meter.{{U}} (44) {{/U}}. The scientists say it was small enough to pass through the blood vessels of the cancer, but it was too big to enter normal blood vessels. The surface of the nanocells also helped them to avoid natural defenses. {{U}} (45) {{/U}}That cut off the blood supply and trapped the nanocell inside the cancer. Then, the nanocell slowly released chemotherapy drugs to kill the cancer ceils. {{U}} (46) {{/U}}.

填空题The tragedy of David Woods is compared to cherry backdrop to Australia.

填空题If I lend you the money ________________ (这个月我就无法收支平衡了).

填空题Directions: In this section, there is a passage with ten blanks. You are required to select one word .for each blank from a list of choices given in a word bank following the passage. Read the passage through carefully before making your choices. Each choice in the bank is identified by a letter. Please mark the corresponding letter for each item on Answer Sheet 2 with a single line through the centre. {{U}}You may not use any of the words in the bank more than once.{{/U}} Your body needs a certain amount of energy to maintain basic {{U}} {{U}} 1 {{/U}} {{/U}}such as breathing, blood circulation and digestion. The energy required to keep your organs functioning is referred to as the resting or basal metabolic rate. Any time you are active,{{U}} {{U}} 2 {{/U}} {{/U}}energy is required. It is obtained from glycogen (糖原) and fat stored in the blood, liver, and muscles. The key to losing weight is to draw on the fat rather than on the carbohydrate reserves. Which of the two energy sources you use depends on the intensity and {{U}} {{U}} 3 {{/U}} {{/U}}of your activity. The higher the intensity, the more your body will pull from the stored carbohydrates. The lower the intensity, the {{U}} {{U}} 4 {{/U}} {{/U}}your body will rely on fat as its fuel. Aerobic exercise is most {{U}} {{U}} 5 {{/U}} {{/U}}for weight loss. When you perform aerobic activities you {{U}} {{U}} 6 {{/U}} {{/U}}contract large muscle groups such as your legs and arms. Walking, running, rollerblading, swimming, dancing, and jumping jacks are all forms of aerobic activity. Surprisingly, if your aerobic activity is low to moderately intense and of long duration, you will burn more fat than if you had {{U}} {{U}} 7 {{/U}} {{/U}}in a short burst of high-intensity exercise. In short, a brisk 30-minute walk will bum fat while a 100-yard sprint will bum glycogen. A. positive F. physical [K] started B. additional G. activities [L] repeatedly C. duration [H] functions [M] less D. effective [I] participated [N] amount E. more [J] efficient [O] obviously

填空题 There's no question that the Earth is getting hotter. The real questions are: How much of the warming is our fault, and are we{{U}} (47) {{/U}}to slow the devastation by controlling our insatiable{{U}} (48) {{/U}}for fossil fuels? Global warming can seem too{{U}} (49) {{/U}}to worry about, or too uncertain—something projected by the same computer{{U}} (50) {{/U}}that often can't get next week's weather right. On a raw winter day you might think that a few degrees of warming wouldn't be such a bad thing anyway. And no doubt about it: Warmings about{{U}} (51) {{/U}}change can sound like an environmentalist scare tactic, meant to force us out of our cars and restrict our lifestyles. Comforting thoughts, perhaps. Unfortunately, however, the Earth has some discomforting news. From Alaska to the snowy peaks of the Andes the world is heating up right now, and fast. Globally, the {{U}}(52) {{/U}}is up 1°F over the past century, but some of the coldest, most remote spots have warmed much more. The results aren't pretty. Ice is{{U}} (53) {{/U}}, rivers are running dry, and coasts are{{U}} (54) {{/U}}, threatening communities. The{{U}} (55) {{/U}}are happening largely out of sight. But they shouldn't be out of mind, because they are omens of what's in store for the{{U}} (56) {{/U}}of the planet.A — remote B — techniques C — consisting D — restE — willing F — climate G — skill H — appetiteI — melting J — vanishing K — eroding L — temperatureM — curiosity N — changes O — skillful

填空题One more important area should be considered is anti-theft equipment.

填空题For visitors just______(想游览) Three Gorges, the cruise from choice. to Yichang is a good choice.

填空题Woman has gained equal status to man in China.