问题 多项选择题

有关DIC的叙述正确的是()

A.按代偿情况分为代偿期、失代偿期、过度代偿期

B.按病程分为高凝期、消耗性低凝期、继发性纤溶亢进期

C.按发生快慢分为急性期、亚急性期、慢性期

D.易发生DIC的疾病有严重感染、手术与创伤、恶性肿瘤、病理产科

E.主要临床表现有出血、贫血、休克、器官功能障碍

答案

参考答案:A, B, C, D, E

单项选择题

Questions 81-90 are based on the following passage.


It sounds like a science fiction, but researchers say it’s a scientific fact: Microscopic organisms dubbed "killer algae" are paralyzing fish with unknown toxins and then eating away at their flesh. They might be making people sick, too.
The name given to this single-cell organism, or dinoflagellate, is Pfiesteria piscimorte- literally, "fish killer. " It was discovered at North Carolina State University in 1988, but at the same time, few scientists believed in its existence, much less in its highly unusual predatory nature. But ongoing research has led to international acknowledgment of the phenomenon and, recently, research funding.
Seemingly prompted by an unknown substance secreted by fish, the aggressive creature swims into action. It sends neurotoxins into the water and air, paralyzing a fish’s nervous system, and causing it to gasp for air at the surface. Eventually the fish suffocates. The killer dinoflagellate then attaches itself to the fish and begins sucking away at its flesh. This macabre scenario may help solve several sea mysteries, such as why fishermen report seeing "fish walks" (fish trying to leave the water) and pools of dead fish with holes eaten through them.
Whether humans are affected by the dinoflagellate’s toxin remains to be seen. Researchers think it’s unlikely eating fresh fish are in danger, but anyone with frequent exposure to the creature could be in peril. Several researchers working with the algae have reported bouts of memory loss and disorientation.
To understand the killer algae further, scientists must fully characterize their toxin and determine what stimulates them to attack. They also need to know if the algae are hurting fish populations, and whether pollutants make them more likely to attack.

It is implied in the passage that ______.

A. many scientists had known dinoflagellate before 1988
B. there had been no such organisms before 1988
C. many scientists were in doubt about the nature of the organism in 1988
D. no scientists knew anything about the organism in 1988

单项选择题