24. The body of anyone infected by virus X will, after a week, produce antibodies to fight the virus: the antibodies will increase in number for the next year or so. There is now a test that reliably indicates now many antibodies are present in a person’s body. If positive, this test can be used during the first year of infection to estimate to within a month how long that person has had the virus.
Which one of the following conclusions is best supported by the statements above?
(A) Antibodies increase in number only until they have defeated the virus.
(B) Without the test for antibodies, there is no way of establishing whether a person has virus X.
(C) Antibodies are produced only for viral infections that cannot be fought by any other body defenses.
(D) If a person remains infected by virus X indefinitely, there is no limit to the number of antibodies that can be present in the person’s body.
(E) Anyone infected by virus X will not a time fail to exhibit infection if tested by the antibody test
the answer is E. why? i think none of them is right, E is better than the rest. 我认为E错， 因为原题说“after a week, produce antibodies ”。 如果某人被感染不超过一星期，文中提的方法不能成功检测到抗体，E不成立。是不是我想偏了，还是理解错了？ 还有，BEST SUPPORTED 和INFER的题， 该用什么解题思路？我只知道服从原文内容和原文的逻辑推理。在读题方面有什么该注意的呢？谢谢了。
reliably indicates now many antibodies ... E取非不反对此句(如果取非为 sometimes fail to...)。if someone got infected by virus x within a week, and produce no antibodies, we can still say that the test reliably indicates now many antibodies... (since there is no antibody, and the test can tell there is no antibody). if remove "after a week", there should be no such doubt. 如果E取非为all fail, 那E是答案。
anyway, i have to admit E is better than the rest answers.
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发表于 2003-9-1 09:38:00
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