[原创]11月3日新鲜JJ奉上，感谢CD（更新RC）

michelle423

同问!

arig

画韦恩图就清晰了，是61，偶开始画错了，应该是

ABC交集3，AB交集是3+2，BC交集是3+2，AC交集是3+3

hummel

感谢楼主分享

jimmyshu

32 楼的图看不到……

能不能打成 文字呀？

谢谢啊

begood2008

I think this one should be B rather than C. Any comment?

1.         T-7-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 white-footed 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?

 

 

 

1. Ticks do not suffer any adverse consequences from carrying the bacterium that causes Lyme disease in humans.

2. There are no known cases of a human’s contracting Lyme disease through contact with white-footed mice.

3. A deer tick feeds only once while in the larval stage.

4. A single host animal can be the source of bacterium for many tick larvae.

5. None of the other species on which deer tick larvae feed harbor other bacteria that ticks transmit to humans