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问题 单项选择题

一个羊水栓塞的患者出现：血小板计数<100×10/L，纤维蛋白原>2.0～4.0g/L，PT及TT比正常值延长3s，优球蛋白溶解试验>2h，全身性出血不明显。该患者可诊断为()

A．DIC的中期

B．DIC的晚期

C．纤维蛋白原增多症

D．纤溶期

E．DIC的早期

答案

参考答案：E

阅读理解

阅读理解。

     How words came into being is unknown. All we assume (推测) is that some early men invented certain

sounds, in one way or another, to express thoughts and feelings, actions and things, so that they could talk

with each other. Later they agreed upon certain signs, called letters, which could be put together to show

those sounds, and which could be written down. Those sounds, whether spoken or written in letters, are

called words.

     The power of words, then, lies in their associations-the thing they bring up to minds. Words become

filled with meaning for us by experience; and the longer we live, the more certain words bring back to us the

happy and sad events of our past; and the more we read and learn, the more the number of words that means

something to us increases.

     Great writers are those who not only have great thoughts but also express these thoughts in words which

have powerful effects on our minds and feelings. This clever use of words is what we call literary style (文

体). Above all, the real poet is a master of words. He can express his meaning in words which sing like music,

and which by their position and association can move men to tears. We should therefore learn to choose our

words carefully and use them correctly, or they will make our speech silly and common.

1. We learn from the text that language might have begun with _____. [ ]

A. expressions

B. actions

C. signs

D. sounds

2. What is mainly discussed in Paragraph 2? [ ]

A. The meaning of new words.

B. The relation of human experience with words.

C. The importance of old words.

D. The gradual change and development of words.

3. In the last paragraph, what does the author suggest that we should do? [ ]

A. Use words skillfully.

B. Make musical speeches.

C. Learn poems by heart.

D. Associate with listeners.

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单项选择题

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
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