8,关于Iron-absorption-carbon dioxide关系
(5-8 by kinishelley)
9,CR有一道那个
动物园的工作人员由于常常接触动物 30%被感染XX 所以推测总人口常常接触动物的人中有大于30%的人感染XX 问加强?(wlcx2001) 以下是该题的两个版本：
GWD26-Q22
People who have spent a lot of
time in contact with animals often develop animal-induced allergies, some of
them quite serious. In a survey of current employees in major zoos, about 30
percent had animal-induced allergies. Based on this sample, experts conclude
that among members of the general population who have spent a similarly large
amount of time in close contact with animals, the percentage with
animal-induced allergies is not 30 percent but substantially more.
Which of the following, if true,
provides the strongest grounds for the experts’ conclusion?支持
A. A zoo employee who develops a
serious animal-induced allergy is very likely to switch to some other
occupation. T
B. A zoo employee is more
likely than a person in the general population to keep one or more animal pets
C. The percentage of the
general population whose level of exposure to animals matches that of a zoo
employee is quite small.
D. Exposure to domestic pets
is, on the whole, less likely to cause animal-induced allergy than exposure to