问题 单项选择题

①因为,这两个看来完全相同的温度平均值具有不同的意义。
②只看平均值,难免以偏概全。
③当某个城市某一天的平均气温与全国一年的平均气温完全相同时。
④还要了解影响温度变化的各种因素。
⑤人们如果要到不同的地方去旅行,所要带的衣物不能以所在城市某一天的气温为依据。
⑥要认清后者,不但需要了解某地四季高低温度的差距有多少。
排列组合最连贯的是( )

A.⑤⑥④①③②
B.③⑤①⑥④②
C.③⑤⑥②①④
D.⑤⑥②①④③

答案

参考答案:B

解析: 首先找出问题的来源,③中“当……时”表示事件的由来,⑤将问题补充完整,①说明前一句话的原因,而后,“不但……还”这一关联词语的出现将⑥④两句连接起来,最后②句引出以偏概全问题。因此,本题选B。

名词解释
单项选择题

When a disease of epidemic proportions threatens the public, scientists immediately get to work, trying to locate the source of affliction and find ways to combat. Vaccination is one of the effective ways to protect the (1) population of a region or country which may be (2) grave risk. The process of vaccination allows the patient’s body to (3) immunity to the virus or disease so that, if it is encountered, one can fight it (4) naturally. To accomplish this, a small weak or dead (5) of the disease is actually injected into the patient in a controlled environment, (6) his body’s immune system can learn to fight the invader (7) . Information (8) how to penetrate the disease’s defenses is (9) to all elements of the patient’s immune system in a process that occurs naturally, in which genetic information is passed from cell to cell. This makes sure that (10) the patient later come into contact with the real problem, his body is well equipped and trained to (11) with it, having already done so before.

There are, however, dangers (12) in the process. (13) , even the weakened version of the disease contained in the vaccine proves (14) much for the body to handle, resulting in the immune system (15) , and, therefore, the patient’s death. Such is the case of the smallpox vaccine, (16) to eradicate the smallpox epidemic that nearly (17) the whole Native American population and killed massive numbers of settlers. (18) 1 in 10,000 people who receive the vaccine (19) the smallpox disease from the vaccine itself and dies from it. Consequently, the process, which is truly a (20) , may indeed hide some hidden curses.

12()

A.available

B.plausible

C.accessible

D.inherent