问题 单项选择题 A1/A2型题

以下哪一种治疗法不属于主动的免疫治疗()

A.瘤苗

B.卡介苗

C.短小棒状杆菌

D.抗毒素血清

E.DNA疫苗

答案

参考答案:D

解析:由机体自身产生抗体,使机体不再被病毒感染的免疫称为主动免疫。被动免疫指机体被动接受抗体、致敏淋巴细胞或其产物所获得的特异性免疫能力。抗毒素血清注射属于被动免疫。

完形填空

Scientists have been studying the reasons why some people don't like the taste of certain vegetables. They found that people inherit(遗传)some genes from their parents that cause them to like or dislike certain vegetables.

In their research about tastes, scientists found that there are three types of people in the world. First, there are non-tasters, who are not very sensitive to sweet-tasting foods or bitter-tasting foods. The people of the second type are just called tasters, and those of the third are super tasters who are very sensitive to sweet and bitter flavors. Children of the third type, who are super-tasters, will probably not like vegetables such as broccoli and Brussels sprout because of their bitter taste. This is unfortunate, because super-tasters might avoid eating foods that are important for their health.

The scientists said that thousands of years ago. On the other hand, super tasters actually had an advantage over other types of people. At that time, super-tasters could avoid eating bitter-tasting poisonous plants which other types of people would eat.

From this research about tastes, we learn some interesting things about super-tasters. For one thing, super-tasters have more taste buds(味蕾)on their tongues. And, to super-tasters bitters foods taste very bitter, and sweet foods taste very sweet. Super-tasters might also not like spicy food made with chili pepper, because it would be too hot for them. Furthermore, female supper-tasters probably won't be very fat, but they do seem to enjoy cooking more than other types of people.

小题1:Find in the passage a word closest in meaning to the underlined word "spicy".

_______________________________________________________________.

小题2:What do scientists call those people who are not very sensitive to sweet-tasting or bitter-tasting foods? (回答词数不超过2个)

_____________________________________________________________.

小题3:According to the scientists, why don't some people like the taste of certain vegetables? (回答词数不超过9个)

_____________________________________________________________.

小题4:What would prevent a super-taster from eating food important for their health? (回答词数不超过8个)

_____________________________________________________________.

判断题