问题 单项选择题

一种外表类似苹果的水果被培育出来,我们称它为皮果。皮果皮里面会包含少量杀虫剂的残余物。然而,专家建议我们吃皮果之前不应该剥皮,因为这种皮果的果皮里面含有一种特殊的维生素,这种维生素在其他水果里面含量很少,对人体健康很有益处,弃之可惜。
以下哪项,如果为真,最能对专家的上述建议构成质疑

A.皮果皮上的杀虫剂残余物不能被洗掉。

B.皮果皮中的那种维生素不能被人体充分消化吸收。

C.吸收皮果皮上的杀虫剂残余物对人体的危害超过了吸收皮果皮中的维生素对人体的益处。

D.皮果皮上杀虫剂残余物的数量太少,不会给人体带来危害。

答案

参考答案:C

解析:题干论述的中心思想是皮果的皮对健康有益,因此我们要质疑它就必须要说明皮果的皮有可能对身体有害。
选项C直接说明了吸收皮果皮上的杀虫剂残余物对人体的危害超过了吸收皮果皮中的维生素对体的益处,因此最能质疑题干论述。选项A、选项B虽然也一定程度说明了专家建议可能不对,但不足以质疑专家意见。选项D是支持项。

单项选择题
单项选择题

For many people today, reading is no longer relaxation. To keep up their work they must read letters, reports, trade publications, interoffice communications, not to mention newspapers and magazines: a never ending flood of words. In (1) a job or advancing in one, the ability to read and comprehend (2) can mean the difference between success and failure. Yet the unfortunate fact is that most of us are (3) readers. Most of us develop poor reading (4) at an early age, and never get over them. The main deficiency (5) in the actual stuff of language itself—words. Taken individually, words have (6) meaning until they are strung together into phrases, sentences and paragraphs. (7) , however, the untrained reader does not read groups of words. He laboriously reads one word at a time, often regressing to (8) words or passages. Regression, the tendency to look back over (9) you have just read, is a common bad habit in reading. Another habit which (10) down the speed of reading is vocalization—sounding each word either orally or mentally as (11) reads.
To overcome these bad habits, some reading clinics use a device called an (12) , which moves a bar(or curtain) down the page at a predetermined speed. The bar is set at a slightly faster rate (13) the reader finds comfortable, in order to "stretch" him. The accelerator forces the reader to read fast, (14) word by word reading, regression and subvocalization practically impossible. At first (15) is sacrificed for speed. But when you learn to read ideas and concepts, you will not only read faster, (16) your comprehension will improve. Many people have found (17) reading skill drastically improved after some training. (18) Charlie Au, a business manager, for instance. His reading rate was a reasonably good 172words a minute (19) the training; now it is an excellent 1,378 words a minute. He is delighted that how he can (20) a lot more reading material in a short period of time.

A.Look at
B.Take
C.Make
D.Consider