动机有( )个要素。A．二 B．三 C．四 D．五

阅读理解。

      On 27th February 2008, something very unusual happened in the UK; there was a rather large earthquake.

It was the biggest earthquake in 25 years in the UK. There have been very small tremors in the past but they

pale into insignificance compared to this one.

      It was felt in a large area across the country too, from as far north as Edinburgh in Scotland to as far

south as Plymouth on the south coast of England. 

      The epicenter of the earthquake was in a small town in Lincolnshire, which is an area about two and a

half to three hours north of London by car. A magnitude of 5.2 was registered on the Richter scale. 

      There were lots of reports in the news from people who felt the earth move. One man said, "We had

loads of vibrating and wall shaking and stuff, noise coming off the roof. I came outside-the chimney's on

the floor!" 

      A collapsed chimney was the cause of what was probably the worst injury from the earthquake; a man

broke his pelvis when the chimney fell on him.

      Another man who spoke to the BBC described the moment the earthquake occurred, "Everything was

shaking. As soon as it happened we all went outside and saw everyone else down the street, coming out

and just realized it was an earthquake."

      The huge rumble, which was felt by a lot of people, surprisingly caused very little structural damage to

property.

       Most British people would be surprised to learn that there are 200-300 earthquakes in Britain every year,

but most of them are so small, they go unnoticed. The magnitude of this earthquake is fairly small in

comparison to some other natural disasters that have made international news, but for the people affected, it

certainly came as quite a surprise.

1. Before this earthquake ______. [ ]

A. there was no signs of any shakings at all.

B. people did not feel anything unusual.

C. many people realized there would be a bigger one to come.

D. some small quakes were only too small to be ignored.

2. From this passage we know ______ is in the south of Great Britain. [ ]

A. Lincolnshire

B. Edinburgh

C. Plymouth

D. Scotland

3. This earthquake _____. [ ]

A. hardly caused any damages to the people's belongings

B. brought down many buildings in England

C. scared many people to death

D. made the world greatly surprised

4. After reading this passage we can infer ______. [ ]

A. people in England faced the earthquake bravely

B. this earthquake seemed to be felt all over Great Britain

C. this earthquake is the biggest one in history

D. the chimneys in Britain are the most poorly built parts of the houses

不具有免疫抑制活性的药物是

A．泼尼松
B．甲氨蝶呤
C．左旋咪唑
D．环磷酰胺
E．环孢素

被红火蚁叮咬了怎么办？

体内外均有强大抗凝血作用的药物是（）

A.华法林

B.肝素

C.阿司匹林

D.尿激酶

E.枸橼酸钠

科学信念是以对事物发展规律的（）为基础，在实践中不断受到检验、完善，具有不可抗拒的力量的一种观念和态度。

A.正确认识

B.错误认识

C.根本认识

D.系统了解