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问题 多项选择题 X型题

腹部闭合性损伤，出现下列情况应考虑有内脏损伤（）

A.有早期休克征象

B.肝浊音界消失

C.持续性剧烈疼痛

D.有呕血或黑粪

E.以上都不对

答案

参考答案：A, B, C, D

解析：腹部闭合性损伤有内脏受损时，伤情严重，需早诊断、早治疗。腹内实质性脏器损伤破裂时常有内出血，早期出现休克。空腔脏器损伤破裂主要表现为腹膜炎、胃肠道症状、腹膜刺激征、气腹征等。

选择题

含羞草的叶子被碰后会合拢，这说明生物具有[ ]

A．生长现象

B．应激性

C．繁殖能力

D．遗传性
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单项选择题

Our ape-men forefathers had no obvious natural weapons in the struggle for (1) in the open. They had neither the powerful teeth nor the p claws of the big cats. They could not (2) with the bear, whose strength, speed and claws (3) an impressive " small fire" weaponry. They could not even defend themselves (4) running swiftly like the horses, zebras or small animals. If the ape-men had attempted to compete on those terms in the open, they would have been (5) to failure and extinction. But they were (6) with enormous concealed advantages of a kind not possessed by any of their competitors.

In the search (7) the pickings of the forest, the ape-men had (8) efficient stereoscopic vision and a sense of color that the animals of the grasslands did not (9) . The ability to see clearly at close range permitted the ape-men to study practical problems in a way that lay far (10) the reach of the original inhabitants of the grassland. Good long-distance sight was (11) another matter. Lack of long-distance vision had not been a problem for forest-dwelling apes and monkeys because the (12) the viewpoint, the greater the range of sight-so (13) they had had to do was climb a tree. Out in the open, however, this simple solution was not (14) . Climbing a hill would have helped, but in many places the ground was flat. The ape-men (15) the only possible solution. They reared up as high as possible on their hind limbs and began to walk (16) . This vital change of physical position brought about considerable disadvantages. It was extremely unstable and it meant that the already slow ape-men became (17) still. (18) , they persevered and their bone structure gradually became (19) to the new, unstable position that (20) them the name Homo erectus, upright man.

5（）

A.driven

B.doomed

C.forced

D.led
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