问题 单项选择题 A3/A4型题

24岁初产妇,仅在乡卫生院做过2次产前检查,自述现妊娠38周,阵发腹痛2小时来院分娩。检查血压120/80mmHg,胎心140次/分,四段触诊发现母体宫底部可触及胎头,拟诊为臀先露。

关于臀先露的描述,下列哪项正确()

A.单臀先露最常见

B.完全臀先露最常见

C.足先露最常见

D.膝先露最常见

E.B超不易辨别臀先露的类型

答案

参考答案:A

阅读理解

A strong wind can be a dangerous thing — sometimes it is powerful enough to knock you off your feet. But to plants, the wind is a source of new life, carrying them or their spores (孢子) thousands of miles.

A NASA satellite called QuikSCAT has discovered highways of wind over the Earth's oceans. Scientists believe these invisible roads may explain why many nonflowering plants, such as mosses (苔) and lichens (地衣), grow where they do.

The satellite is able to send microwaves (微波) from space to the surface of the ocean. The pattern of signals that come back shows which way the winds are blowing.

Using this data, the scientists studied a group of islands in the southern hemisphere (半球), near Antarctica.Winds tend to blow anticlockwise (逆时针) in this region, but there are lots of local differences.

When the researchers compared these local patterns to botanical (植物学) data, they found that the wind had an important effect on where species of mosses, lichens, and other nonflowering plants grow.

For example, Bouvet Island and Heard Island, share 30 per cent of their moss species, 29 per cent of liverworts (叶苔), and 32 per cent of lichens — even though they are 4,430 kilometers apart. In contrast, Gough Island and Bouvet Island, separated by just 1,860 kilometers of sea, share only 16 per cent of mosses and 17 per cent of liverworts. They have no lichens in common.

Ferns (蕨类植物) and flowering plants don't travel as well in the wind, so they don't show the same kinds of distribution (分布) patterns.

小题1:This story is about _____.

A.the discovery of wind highways

B.how wind travels

C.how wind affects different plants

D.one function of the wind小题2:The underlined word "data" in the fourth paragraph means _____.

A.signal

B.pattern

C.information

D.research小题3: Which of the following is wrong?

A.Bouvet Island, Heard Island and Gough Island are all in the southern hemisphere.

B.Winds in the researched area blow anti-clockwise.

C.The scientists shouldn't base this research on how winds affect where ferns grow.

D.Without the discovery of QuikSCAT, the research wouldn't have made sense.小题4: Which of the following diagrams shows the correct position of the islands?

         

            

填空题