非标准计量器具包括垂直检测尺、游标塞尺、（）、内外角检测尺等。A．钢直尺 B．弯尺

缺词填空

George Mallory was an English school teacher who loved climbing. In 1924, Mallory and a team of British climbers tried to get to the top of Mount Qomolangma, the tallest mountain in the world. No one had ever done it before.

Mallory had already t 小题1:to reach the top of Mount Qomolangma in 1921 and 1922, but he had failed b 小题2:times. In 1924, he started to climb again. On June 8, 1924, he and another climber, Andrew Irvine, were only a few hundred metres a 小题3:from the top of the mountain. The other m小题4:of their climbing team watched as Mallory and Irvine climbed slowly up towards the top. However, the weather was very misty, and soon the two men d 小题5:    into the mist（雾）. They could never r 小题6: .In 1953, Edmund Hillary from New Zealand, and Tenzing Norgay from Nepal, finally r 小题7: the top of Mount Qomolangma. Most people thought that they were the first men to do this, but some people wondered w  小题8:Mallory and Irvine had got there first.

Many years later, in 1999, Mallory's body was found on Mount Qomolangma, about six hundred metres from the top of it. However, it is still u小题9:if he and Irvine ever reached the top of the mountain.

Someone had once asked Mallory w小题10:he wanted to climb the most dangerous mountain in the world.

“Because it's there,” he answered.

世界上继天花之后第二个要消灭的传染病是（）

A.鼠疫

B.炭疽

C.霍乱

D.脊髓灰质炎

E.钩端螺旋体病

[听力原文] ？？亚洲是世界上面积最大的洲，世界上有60%以上的人口生活在这里。亚洲也是黄种人最多的洲。亚洲有48个国家，世界人口最多的国家是中国，排在第二位的是印度。 亚洲人口是世界总人口的多少？（）

A．大于50% 

B．大于60% 

C．小于50% 

D．小于60%

关于白帜灯的说法，正确的是（）。

A、光效较高，使用寿命长

B、灯丝加热缓慢，不能瞬时启动

C、是纯电感性负载

D、灯丝的冷态电阻比热态电阻小得多，在点燃瞬时电流较大