做圆周运动的物体 A.速度一定改变 B.动能一定改变 C.加速度一定改变 D.机

题型:选择题

问题:

做圆周运动的物体

A.速度一定改变

B.动能一定改变

C.加速度一定改变

D.机械能一定改变

考点:匀速圆周运动
题型:选择题

阅读理解。

     Traveling to every part of the world gets easier, but how well do we know and understand each other. Here's a simple test. Imagine you are planning to hold  a  meeting at four  o'clock. What time  should you

expect your foreign business friends to arrive?  If  they  are  Germans,  they'll arrive on time.  If  they  are

Americans, they'll probably be  15  minutes early.  If they are Englishmen, they'll be 15 minutes late,  and

you should allow up to an hour for the Italians.

     The British seemed to think since the English language was widely used  in  the world,  people  would

always understand what they do.  However, they found they were completely wrong.  For example,  the

British are happy to have a business lunch and discuss business matters and have a drink during the meal.

The Japanese prefer not to work while eating.   Lunch is a time for them to relax and get  to  know  each

other and they don't drink at lunchtime. The Germans like to talk business before dinner. The French like

to eat first and talk afterwards. They have to be well fed and watered before they discuss anything.

1. What do the Germans prefer when they go to a meeting?

A. They prefer to be on time.

B. They prefer to arrive very early.

C. They prefer to arrive very late.

D. They prefer to arrive a little late.

2. According to the text, if a group of Englishmen, Americans and Italians hold a meeting, who will be the last to arrive? 

A. The Englishmen.

B. The Americans.

C. The Italians.

D. Both the Englishmen and the Italians.

3. What do the Japanese like to do at lunchtime?  

A. To drink.

B. To get to know each other.  

C. To talk business.

D. To eat only.

4. According to the writer, the British like to ________. 

A. arrive on time and talk business during the meal

B. arrive earliest and hate talking business at a meal

C. arrive 15 minutes late and talk business after the meal

D. arrive a few minutes late and discuss business during the meal

5. By giving us the two examples, the writer means to show us that _______. 

A. different countries have different cultures in different parts of the world

B. the Germans are more serious and have good living habits

C. the Italians are careless people and they are never on time for everything

D. the French people are very lazy. They prefer eating and drinking more

题型:选择题

急性化脓性骨髓炎初期热毒蕴结、气滞血瘀治疗时,可选用()。

A.仙方活命饮

B.黄连解毒汤

C.五味消毒饮

D.仙方活命饮加黄连解毒汤或五味消毒饮

E.透脓散

题型:选择题

在整片基础下设计主要起挤密作用的土桩或灰土桩时,重复挤密面积最小的布桩方式为()

A.正三角形

B.正方形

C.梅花形

D.等腰梯形

题型:选择题

在西欧封建社会,最大的土地所有者和封建制度的精神支柱是

A.世俗封建主

B.矮子丕平

C.商人和银行家

D.教皇和教会

题型:选择题

电视剧《走向共和》片尾曲唱道:“一代代仁人志士,救国救民,上下求索;一辈辈英雄好汉,前赴后继,热血染江河。”其中,作为伟大的民主革命先行者孙中山的求索成果主要是()

A.迈出中国向西方学习的第一步

B.掀起中国第一场资产阶级启蒙运动

C.宣传民主革命思想

D.在中国实现共和制

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