Question

6．In the United States，30 percent of the people have a"weight problem"．To many people the cause is obvious （明顯的）：they eat too much．But scientific evidence （證據(jù)） does little to support this idea．Going back to America of 1910，we find that people were thinner than today，yet they ate more food．In those days people worked harder physically，walked more，used machines much less，and didn't watch television．
Several modern studies，moreover，have shown that fatter people don't eat more on average than thinner people．A 1979 study of 3，545 London office workers showed that fat people eat less than slim （苗條的） people．
Studies also show that slim people are more active than fat people．A study by a research group at Stanford University found the following interesting facts：
The more the man ran，the greater loss of the body fat．
The more they ran，the greater increase in food intake．
Thus，those who ran the most ate the most，yet lost the greatest amount of body fat．
29．Nowadays many Americans have the problem thatC．
A．they are too slim              
B．they work too hard
C．they are too fat           
D．they lose too much body fat
30．According to the passage，how many people in 900 Americans have a"weight problem"？D
A.150．B.300．C.600．D.270．
31．Is there any scientific evidence to support the idea that eating too much is the cause of a"weight problem"？C
A．Yes，there is plenty of evidence．
B．Of course，there is some evidence to support this．
C．There is hardly any scientific evidence to support this．
D．We are not sure．
32．The Americans in 1910A．
A．a(chǎn)te more food and had more physical activities
B．a(chǎn)te less food but had more physical activities
C．a(chǎn)te less food and had less physical activities
D．had more problems．

Answer 1

分析 本文屬于議論文閱讀，主要向我們介紹了如今在美國30%的人有體重問題，然而以前人們吃的更多卻比現(xiàn)在要瘦，文章中分析了造成這個現(xiàn)象的原因：現(xiàn)在的人們?nèi)狈�運動，以前的人們雖然吃的多但是從事的體力勞動也多．

解答 29．C  細節(jié)理解題，根據(jù)第一段In the United States，30 percent of the people have a"weight problem"．To many people the cause is obvious （明顯的）：they eat too much．可知30%的美國人有體重問題，他們吃的太多，體重太重了，故選C．
30．D  細節(jié)理解題，根據(jù)第一段In the United States，30 percent of the people have a"weight problem"．可知30%的人有體重問題，900*30%=270個人，故選D．
31．C  細節(jié)理解題，根據(jù)第一段To many people the cause is obvious （明顯的）：they eat too much．But scientific evidence （證據(jù)） does little to support this idea．可知科學依據(jù)不支持吃太多是一個"體重問題"的原因，故選C．
32．A  細節(jié)理解題，根據(jù)第一段Going back to America of 1910，we find that people were thinner than today，yet they ate more food．In those days people worked harder physically，walked more，used machines much less，and didn't watch television．可知在1910年人們吃更多的食物但是卻比現(xiàn)在瘦，他們從事更多辛苦的體力勞動，故選A．

點評 考查學生的細節(jié)理解和推理判斷能力．做細節(jié)理解題時一定要找到文章中的原句，和題干進行比較，再做出正確選擇．在做推理判斷題時不要以個人的主觀想象代替文章的事實，要根據(jù)文章事實進行合乎邏輯的推理判斷．