44 The average modified mouse lived
A 3 years.
B 753 days.
C More than 3 years.
D 887 days.
45 What Can be inferred from the passage about the route tO long life?
A It remains to be studied.
B It has already been discovered.
C Eating more leads to long life.
D Eating less leads to long life.
答案解析
41.正确答案为C 答案在第二和第三段里可以找到,Kahn认为延长寿命的关键在于瘦,但是要瘦关键不在吃什么,吃多少,而在于blocking the rodents(啮齿动物)increase of fat in specific cells,即阻止某些细胞里脂肪的增加。
42.正确答案为B 第四段讲的很清楚,这个方法在人身上是否有效还不知道,因为很少有人愿意接受这样的试验。
43.正确答案为A 第三段的最后一句句子是“’these mice eat all they want,lose weight and live longer.Its like heaven.’可以敞开吃,不会发胖,还能长寿,这实在是太好了,好像进入关国一样美好。这道出了人的心声。
44.正确答案为D 答案在倒数第三段里可以找到。
45.正确答案为A 从文章的最后两段我们可以感到对Kahn的试验同行中是有不同意见的,至少到目前为止还不能说已经找到了延长寿命的方法。