未知题型 Every animal is a living radiator-heat formed in its cells is given 【M1】______through its skin. Warm-blooded animals maintain a steady temperatureby constantly replacement lost surface heat; similar animals, which have more 【M2】______skin for every ounce of body weight, must produce heat faster than biggerone. Because smaller animals burn fuel faster, scientists say they live faster. 【M3】______The speed by which an animal lives is determined by measuring the rate at 【M4】______which it uses oxygen. A chicken, for example, uses one-half cube centimeter 【M5】______of oxygen every hour for each gram it weighs. The tiny shrew uses four cubiccentimeters of oxygen every hour for each gram it weighs. Because of it uses 【M6】______oxygen eight times as fast, it was said that the mouselike shrew is living eight 【M7】______times as fast as the chicken. The smallest of the warm-blooded creatures, thehumming bird, lives a hundred times as fast as an elephant.There is no limit to how small a warm-blooded animal can be. A mammal or 【M8】______bird that weighed only two and a half grams would starve to dead. It would 【M9】______burn up its food too rapidly and would not be able to eat faster enough to supply 【M10】______more fuel.【M1】

单项选择题 —I’d met Cynthia several times before this gathering. —（）.

未知题型 听力原文： Advertising expenditure worldwide was $225 billion last year, according to a report of a leading magazine. $32 billion of this, or 14%, was taken by magazines. In Europe, the share of consumer magazine advertising expenditure was $12 billion, or 21% of an estimated overall spend of $57 billion. But the share has dropped in the past 15 years from 30 per cent, with decline having been particularly severe in Belgium and Germany where commercial television was introduced relatively late.(88)