试题与答案

我们通常说的平面轴承是指推力轴承，它仅承受轴向载荷。

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题型：判断题

题目：

我们通常说的平面轴承是指推力轴承，它仅承受轴向载荷。

答案：

参考答案：对

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题型：阅读理解

阅读理解。

    Michael Fish may soon be replaced as a weather forecaster by something truly fishie-the shark(鲨鱼).

    Research by a British biology student suggests that sharks couldbe used to predict storms.

    Lauren Smith,24, is close to completing her study on sharks'a bility to sense pressure.

    If her studies prove the theory, scientists may be able to monitor the behaviour of sharks to predict

bad weather.

    Miss Smith had previously studied the behaviour of lemonsharks in the Bahamas.

    She then used their close relatives, lesser spotted dogfish, forfurther research at Aberdeen University.

    Her work-thought to be the first of its kind to test the pressuretheory -resulted from the observation

that juvenile blacktip sharksoff Florida moved into deeper water ahead of a violent storm in2001.

    Miss Smith said,"I've always been crazy about traveling anddiving and this led me to an interest in

sharks."

    "I was deligbted to have been able to research in the area formy degree. I know there's so much more we need to understand-butit certainly opens the way to more research. "

    It has been discovered that a shark senses pressure using haircells in its balance system.

    At the Bimini Shark Lab in the Bahamas,Miss Smith fixedhi-tech sensors to sharks to record pressure

and temperature, whilealso tracking them using GPS ( Global Positioning System )technology.

    In Aberdeen,she was able to study the effects of tidal(潮汐的)and temperature changes on dogfis-none of which were harmed. She also used a special lab which can mimic(模拟)oceanic pressure changes caused by weather fronts.

She is due to complete her study and graduate later this year.She says she will be looking for a job which will give her the chanceto enrich her experience of shark research.

1. The passage is most probably taken from_______.

A. a short-story collection      

B. a popular science magazine  

C. a research paper            

D. a personal diary

2. What do we learn om the first four paragraphs of the passage?

A. Sharks may be used to predict bad weather.

B. Sharks' behaviour can be controlled.

C. Michael Fish is not qualified for his job.

D. Lauren Smith will become a weather forecaster.

3. Lauren Smith conducted her research by_______.

A. removing hair cells from a shark's balance system

B. measuring the air pressure of weather fronts

C. Fecording sharks' body temperature

D. monitoring sharks' reaction to weather changes

4. What is the passage mainly about?  

A. A popular way of forecasting weather.

B. A new research effort in predicting storms.

C. Biologists' interest in the secrets of sharks.

D. Lauren Smith's devotion to scientific research.
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