[单项选择]下列有关血栓的描述中，错误的是（）
A. 纤维素血栓易溶解吸收
B. 可形成静脉石
C. 再通可恢复正常循环
D. 可阻塞动脉、静脉
E. 可继发于血管炎

Communication technologies are far from equal when it comes to conveying the truth. The first study to compare honesty across a range of communications media has found that people are twice as likely to tell lies in phone conversations as they are in E-mails. The fact that E-mails are automatically recorded--and can come back to haunt(困扰) you--appears to be the key to the finding.
Jeff Hancock of Cornell University in Ithaca, New York, asked 30 students to keep a communications diary for a week. In it they noted the number of conversations or E-mail exchanges they had lasting more than 10 minutes, and confessed to how many lies they told. Hancock then worked out the number of lies per conversation for each medium. He found that lies made up 14 percent of E-mails, 21 percent of instant messages, 27 percent of face-to-face interactions and an astonishing 37 percent of phone calls.
His results, to be presented at the conference on human-computer interaction in Vienna
A. They are afraid of leaving behind traces of their lies
B. They believe that honesty is the best policy
C. They tend to be relaxed when using those media
D. They are most practiced at those forms of communication

Passage Five
The idea of a fish being able to generate electricity strong enough to light lamp bulbs--or even to run a small electric motor--is almost unbelievable, but several kinds of fish are able to do this. Even more strangely, this curious power has been acquired in different ways by fish belonging to very different families.
Perhaps the best known are the electric rays, or torpedoes (电鱼), of which several kinds live in warm seas. They posses on each side of the head, behind the eyes, a large organ consisting of a number of hexagon- al shaped cells rather like a honeycomb. The cells are filled with a jelly-like substance, and contain a series of flat electric plates. One side, the negative side, of each plate, is supplied with very fine nerves, connected with a main nerve coming from a special part of the brain. Current passes from the upper, positive side of the organ downwards to the negative, lower side. Generally it is necessary to touch the fish
A. the capacity to generate electricity is the distinctive characteristic of the fish
B. the current travels in an upward direction from the positive side to negative side in torpedo's electric cells
C. some fish can produce enough electricity to drive a number of electric motors
D. the torpedo's electric cells have a shape with six sides