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问题 单项选择题

十二指肠溃疡伴有幽门不全梗阻者应选择的治疗方法是

A．胃管减压，输液疗法
B．胃大部切除术
C．高选择性迷走神经切断术
D．选择性迷走神经切断术加幽门成形
E．胃空肠吻合术

答案

参考答案：B

阅读理解

Penguins are lovely seabirds. They have wings but they cannot fly. They wear a black or blue-gray coat, and they have a white belly, and a pair of short legs. There are eighteen kinds of them. We must look at their heads and necks to tell one kind from another. Some of them have strange-looking hair on their head. When these seabirds walk on land, they are slow. Yet, when they are in the water, they become excellent swimmers! Most of them live in places covered by snow and ice year – round, but some are in warmer areas.

小题1: Which part of the penguin’s body is white?

A．The head.

B．The neck.

C．The leg.

D．The belly.小题2:How many kinds of Penguins are there?

A．16.

B．17.

C．18.

D．19.小题3:Where do most of the penguins live?

A．In warm areas.

B．In cold areas.

C．In the sea.

D．On land
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填空题

（11分）

Ⅰ、质量相等的O3和O2中，分子个数之比为___________，原子个数之比为____________； 

如果是在相同温度和相同压强条件下（O3为气体）O3与O2的体积比为___  ________。

Ⅱ、某100mL的CuCl2溶液中，已知溶液中的Cl－的浓度为0.2mol/L。现将一定量的铁粉投入到该溶液中（不考虑溶液的体积变化），回答下列问题：

（1）原溶液中Cu2+的物质的量浓度为　　　　　　　　　　　；

（2）反应后测得Cl－的物质的量浓度为　　　　　　　　　　 ；

（3）若反应后测得Fe2+的溶液为0.05mol/L，则反应生成铜单质的质量为　　　　；

（4）剩余的Cu2+的物质的量浓度为　　　　    　　。
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