明天就考，一道jj请教大家（原题为天山7-13，改为weaken）

题目是天山7-13，改为问weaken

Q13:
Lyme disease is caused by a bacterium transmitted to humans by deer ticks. Generally
deer ticks pick up the bacterium while in the larval stage from feeding on infected whitefooted
mice. However, certain other species on which the larvae feed do not harbor the
bacterium. Therefore, if the population of these other species were increased, the number
of ticks acquiring the bacterium? and hence the number of people contracting Lyme
disease—would likely decline.
Which of the following, if true, most strengthens the argument?
A. Ticks do not suffer any adverse consequences from carrying the bacterium that
causes Lyme disease in humans.
B. There are no known cases of a human’s contracting Lyme disease through contact
with white-footed mice.
C. A deer tick feeds only once while in the larval stage.
D. A single host animal can be the source of bacteria for many tick larvae.
E. None of the other species on which deer tick larvae feed harbor other bacteria that
ticks transmit to humans.

如果是strengthens ，选c无疑，但改为weaken后，写jj的nn说：此提变体问weaken,这样一来答案就很清楚了.我的是deer ticks will not pick up the infection after become adult.  

于是偶就想不通了，tick长大后会不会感染上病毒与他小时候会不会吃了脏东西感染上没什么关系呀，...非常纳闷，明天就考了，恳请大家指点一下

偶也有疑问，顶一下

MM明天在哪考啊？我也是明天考呢……

刚刚看到另一个版本：

deer tide的larva把white mouse的bacteria感染到人的那题，问weaken，选项有变，选成年的这种虫会把被有bacteria的larva叮过的deer上的bacteria传染给人(kscorpion9/9 北美 780)

好像更有道理，我在成都考，hirko呢？

嗯，按照上面那个NN感觉才像WEAKEN了，这个月出的GWD&TS上的CR似乎很多啊

我在北京呢，今天就打算在CD上泡一天JJ了

carmenleaf加油！今天我们都要睡个好觉！

同意三楼说法。

同时，祝carmenleaf MM和hirko  MM好运！

要相信自己，心态要好啊。

没什么大不了的，不就是什么什么吗！

明天一定是阳光灿烂的！

谢谢ESeraph 和 howardwang！！！

谢谢ESeraph，howardwang！

hirkomm,一起加油啊，争取把所知道的都派上用场。

a za a za fighting!