只有一组对边平行的四边形是______,求梯形面积的字母公式是______.

题型:填空题

问题:

只有一组对边平行的四边形是______,求梯形面积的字母公式是______.

考点:平行四边形的特性
题型:填空题

阅读理解.

      Once every four years,men from all over Greece came to join in a great athletic festival in Elis,in western Greece. This was called the Olympic Games because the place was called Olympia. We don't know when men first began ce]ebrating the Olympic Games, but they had certainly already done it in the time of' Homer,by 776 BC. The games were so regular(有规律的) that people used them to date by. They would say,"I was born in the second year of the twenty-fourth Olympiad ( starting from776 BC). "

     When it was time for the games, the rulers (统治者) of Elis sent the massage all over Greece. They declared a truce(宣布休战) throughout the Greek world for a month. No matter whom they had a war with,they had to stop the war and let their players go through their city state safely to get to the Olympic Games. Each city state paid for a few players from their city to travel to Elis. But the player had to promise that they had already practiced for at least ten months.

1. The underlined word "athletic" is related to         .

A. music    

B. time      

C. places    

D. sports

2. Elis is in the        of' Greece.

A. east      

B. south      

C. west      

D. north

3. The twenty-fourth Olympics must be held in           .

A. 680 BC          

B. 684 BC

C. 688 BC            

D. 692 BC

4. How long should the truce last because of the Olympic Games?

A. A day.    

B. A week.    

C. A month.  

D. A year.

题型:填空题

电容型设备及金属氧化物避雷器绝缘在线监测装置应满足的基本功能()。

A.具有故障报警功能(数据超标报警、测试功能异常报警、信号回路异常报警等

B.监测装置应具备长期稳定工作能力,具有现场校验模式,提供校验用接口,具有断电不丢失数据、自诊断、自复位的功能

C.金属氧化物避雷器绝缘在线监测装置具备对金属氧化物避雷器的全电流、阻性电流、运行电压等状态参量进行连续实时或周期性自动监视检测功能

D.自动纠错和修复功能

题型:填空题

栀子具有的功效是( )

A.泻火解毒,利尿

B.清热燥湿,泻火解毒,止血

C.清热解毒,除烦止渴,消肿止痛

D.泻火除烦,清热利湿,凉血解毒

E.清热除烦,泻火解毒,利尿

题型:填空题

机器语言程序,由()构成。

A.ASCII码

B.英文字母

C.二进制码

D.汉字国际码

题型:填空题

认识事物发展变化的规律,是指引人们走向成功的()。

A.根本法则

B.基本路径

C.重要经历

D.唯一方法

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