Most children, even the youngest of children, are delighted to be around cats and dogs. Bu

Most children, even the youngest of children, are delighted to be around cats and dogs. But these pets carry plenty of germs and allergens（过敏原）, prompting researchers to ask: Are cats and dogs really safe for children？
A study finds that, contrary to many parents’ fears, owning cats or dogs does not increase a child’s risk of developing allergies, and in fact, may actually protect them. The study’s lead author, Dr. Dennic Ownby of the Medical College of Georgia, says that even he was “very surprised” by the results. Ownby and colleagues followed more than 470 children from birth to age 6 or 7, comparing those exposed to cats and dogs during their first year of life to those who were not.
By using skin-prick tests for detecting common allergies, the researchers found that, contrary to what many doctors had been taught for years, children who had lived with a pet were not at greater risk.
Even more remarkable, children who had two or more dogs or cats had an even greater reduction, up to 77 percent, in risk of allergies. Researchers suggest this protective effect may be the result of early exposure to lots of bacteria that are carried by dogs and cats. Exposing young children to these bacteria helps exercise their immune systems early in life so that they're better able to resist allergic diseases later.
There's something very important in that first year of life when the immune(免疫) system is developing that we can retrain it away from an allergic response, said Dr. William Davis.
And while researchers are not encouraging parents to buy dogs or cats just to reduce a child’s allergy risk, they say if a family already has one or more animals, there's no need to get rid of them.
【小题1】Why do the researchers feel “very surprised” by the results of the study?A．Because the results are contrary to their expectation．B．Because so many children are playing with cats and dogs．C．Because parents are so much worried about their children．D．Because children with animals may develop allergies easily．【小题2】Compared with children who have pets，those who haven’t .A．will lose the chance to develop immune systemB．will reduce the harm from bacteriaC．may suffer allergic diseases more oftenD．can keep doctors away【小题3】The underlined word “it” in the fifth paragraph refers to .A．the early lifeB．an allergic diseaseC．something important D．immune system【小题4】What is the passage mainly about?A．How to protect your kids from allergiesB．Bacteria do good to your kidsC．Your pets may be helping your kidsD．Advantages of owning petsA

(答案→)A 解析：文章大意：现代科学证明：孩子在幼儿时期接触狗或猫等宠物对孩子没有害处，反而增强孩子抗感染的能力，增强孩子的安全感。【小题1】细节题。根据该段的最后一句话判断。因为实验研究的结果与人们原来的观点相斥，故教授吃惊。故A正确。【小题2】细节题。根据第四段第一句话Even more remarkable, children who had two or more dogs or cats had an even greater reduction, up to 77 percent, in risk of allergies. 可知和有宠物的孩子相比，那些没有宠物的孩子更经常得过敏的疾病。故C正确。【小题4】细节题。根据There's something very important in that first year of life when the immune system is developing 判断。可知it指的是“免疫系统，故D正确。注意：此类试题，答案就在本句话或者本段中。【小题5】概括题。根据文章中提到的宠物是否会让孩子更容易感染来进行判断。可知有宠物的孩子反而不太可能得过敏方面的疾病，注意：选择文章题目的答案往往是文章中的高频词。选C。

和我的回答一样，看来我也对了