男性，58岁。突发心悸2小时就诊，心电图示：快速性房颤。可首先

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问题单项选择题

男性，58岁。突发心悸2小时就诊，心电图示：快速性房颤。可首先应用以下何种药物使心室率减慢（）

A.利多卡因

B.苯妥英钠

C.普鲁卡因胺

D.奎尼丁

E.洋地黄

答案

参考答案：E

阅读理解

阅读表达。

The new school term is coming. Now the school clerks are planning a new timetable for Class 7 ,

Grade 9.

There are six classes every day, four in the morning and two in the afternoon. The students have a

math class every day. And they have seven English classes in a week. Two of them are given by a foreign

teacher and should be arranged together on Thursday morning.

There are five Chinese classes in a week. Two of them should also be arranged one after the other

for the students to write their corupositions.

They have two physics classes in a week but on different days. Besides these, there is an art class

every Wednesday afternoon.

It's necessary and important for students to take enough exercise. So they have two PE elsses every

week. And they can do outdoor activities after school every afternoon.

阅读短文，完成表格。

选择题

2009年，某商品价值为1元。2010年，生产该商品的社会劳动生产率提高了25﹪，其他条件不变，该商品的价值是

A．0．80元　　

B．0．75元

C．0．85元

D．1．12元