搜题请搜索小程序“爱下问搜题”
问题 单项选择题

孙先生，41岁，有吸烟史20年。全麻下行腹腔镜胆囊切除术后已拔除气管插管，病人意识模糊。目前最重要的护理是（）

A．保持呼吸道通畅

B．约束肢体活动

C．防止输液针头脱出

D．监测生命体征

E．做好保暖

答案

参考答案：A

解答题
简便运算
(
2
5
+
1
6
-
4
15
)÷
1
30

96×101
2.7×99+2.7×2-2.7．
查看答案
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.

3（）

A.became

B.equipped

C.posed

D.provided
查看答案