女，上环后腹痛，血压下降为10．7／6．7kPa（80／50mmHg），心率100次_爱下问搜题

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问题单项选择题 A1型题

女，上环后腹痛，血压下降为10．7／6．7kPa（80／50mmHg），心率100次／分。术者自诉上环器似超过子宫应有的长度。为确诊是否环上行腹腔，下列哪种方法最安全、简便（）

A.宫腔探环术

B.子宫碘油造影术

C.B型超声显像术

D.盆腔X线透视

E.剖腹探查术

答案

参考答案：C

阅读理解

阅读理解。

A Simple Scientific Experiment

Below is a description of a single scientific experiment . It shows us how iron reacts ( 反应) with air and
with water.
Aim : To find out if iron rusts( 生锈) (a) in dry air ; (b) in water that has no air in it ( air- free water) ; (c)
in ordinary water.
Materials : 3 clean iron nails ( 铁钉) ; test tubes ; test tube holder ; cotton wool ; oil ; Bunsen burner.

Iron in dry air
Method
(1)Put some iron nails at the bottom of a test tube.
(2)Push some cotton wool down the tube.
(3)Leave the tube for one week.
Result
After one week, the nails have not rusted.
Conclusion
Iron does not rust in dry air.
Iron in air-free water
Method
(1)Half-fill a test tube with water.
(2)Boil the water for three minutes.( This makes sure
there is no air in the water.
Put two or three clean nails in the water.

(4)Add some oil to the water. ( This will keep
air out of the water.)
(5) Leave the tube for one week.
Result
The nails do not rust in the tube with air-free
water.
Conclusion
Iron does not rust in air- free water.
Iron in ordinary water
Method
(1)Half -fill a test tube with water and add two
or three clean nails.
(2)Leave the tube for one week.
Result
The nails rust in the tube with ordinary water.
Conclusion
Iron rusts in ordinary water.

1. In the first part of the experiment the cotton wool is most probably used to ______________.
A. dry air
B. cotton wool
C. ordinary water
D. air-free water

2. What are necessary steps to make sure the water in the tube is air free?

①Leave half a tube of water in it                ②Boil the water for some time
③Put some clean iron nails in the tube        ④Add some oil to the water
  A. ①②                  B. ①③                 C. ②③                D. ②④

3. We can conclude from the experiment that only ____________ makes iron rusty.

A. keep the air dry
B. keep the tube wet
C. make the nails rust
D. keep the tube clean

单项选择题

某公司规定，在一个月内，除非每个工作日都出勤，否则任何员工都不可能既获得当月绩效工资，又获得奖励工资。

以下哪项与上述规定的意思最为接近（）

A.在一个月内，任何员工如果所有工作日不缺勤，必然既获得当月绩效工资，又获得奖励工资。

B.在一个月内，任何员工如果所有工作日不缺勤，都有可能既获得当月绩效工资，又获得奖励工资。

C.在一个月内，任何员工如果所有工作日不缺勤，仍有可能获得当月绩效工资，或者获得奖励工资。

D.在一个月内，任何员工如果有某个工作日缺勤，必然或者得不了当月绩效工资，或者得不了奖励工资。

E.在一个月内，任何员工如果有工作日缺勤，必然既得不了当月绩效工资，又得不了奖励工资。