标题: LSAT11, SectionI, 24 [打印本页] 作者: theone 时间: 2003-10-9 22:39 标题: LSAT11, SectionI, 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 how 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 for a time fail to exhibit infection if tested by the antibody test.
why chose E, can anybody help me? Thanks!作者: lll123 时间: 2003-10-10 09:22
因为题目说感染X的一周后才产生抗体，在这段时间内用ANTIBODY TEST 是测不出来的作者: theone 时间: 2003-10-10 10:54
就这么简单吗，那么说，后面的话全部是废话以迷惑人喽？作者: littlegirl 时间: 2003-10-10 12:37
这里是不是隐含一个条件：有抗体才能EXIBIT INFECTION？作者: greandgmat 时间: 2003-10-11 19:48
是说通过抗体来测试是否有感染 有一个星期没有抗体就测不出有感染