问题 单项选择题

科学研究表明,大量吃鱼可以大大减少患心脏病的危险,这里起作用的关键因素是在鱼油中所含的丰富的“奥米加-3”脂肪酸。因此,经常服用保健品“奥米加-3”脂肪酸胶囊将大大有助于预防心脏病。
以下哪项,如果为真,最能削弱题干的论证

A.“奥米加-3”脂肪酸胶囊从研制到试销,才不到半年的时间。
B.在导致心脏病的各种因素中,遗传因素占了很重要的地位。
C.不少保健品都有不同程度的副作用。
D.“奥米加-3”脂肪酸只有和主要存在于鱼体内的某些物质化合后才能产生保健疗效。
E.“奥米加-3”脂肪酸胶囊不在卫生部最近推荐的十大保健品之列。

答案

参考答案:D

解析:论证从吃鱼到吃“奥米加-3”脂肪酸胶囊具有保健作用,显然是假设了上述两种东西在性质上市类似的,D选项说明上述的差别,对题干中的“奥米加-3”脂肪酸具有保健作用设置了附加条件,从而削弱题干论证。

完形填空

阅读下面的短文,并根据短文后的要求答题。(请注意问题后的词数要求)

[1]Every year, lots of children die in traffic accidents, and many of these tragedies occur because child safety seats are not properly installed or are not used at all. As more and more families buy private cars, it’s time to _______________ the safety of children.

[2]Parents tend to let the child sit alone in the front passenger seat, or leave the child alone in the back of the car without any safety restraints, have the child held in an adult’s lap, or have the child use an adult’s safety belt. All of these can potentially add elements of danger for a child in a car.

[3]In the 1970s, Western countries began to research safety devices for children in cars. It was later found that special safety devices for children in cars will help to reduce injury by about 70 percent, and child safety seats play a key role in protecting children in case of traffic accidents.

[4]Since 1999, automakers have been required to put child restraint systems in cars in the United States. There are more than 25 million child safety seats in the United States, compared to only 600,000 in China. Today, more than 40 countries in the world have already issued relevant legal regulations, making it compulsory that children sit in safety seats. In Germany, the Netherlands and Japan, children under 12 years old are required to sit in child safety seats.

[5]China is a manufacturing base for child safety seats, but the market in China is still limited. As a result, while we export our products to other countries, our own children in China are rarely provided with safety seats for various reasons. We hope this situation will be improved.

小题1:What’s the main idea of Paragraph 2?(no more than 10 words)

                                                                               

小题2:Fill in the blank in Paragraph 1 with proper words. (no more than 5 words)

                                                                               

小题3:Explain the underlined sentence in Paragraph 5?

                                                                               

小题4:List at least 3 elements of danger for a child in a car.

1)                                                                           

2)                                                                           

3)                                                                           

小题5:What does the author want to tell us by writing such an article? (no more than 12 words )

                                                                              

问答题 简答题