面粉中面筋性蛋白包括（）。A、麦清蛋白 B、麦球蛋白 C、麦胶蛋白 D、麦谷蛋白

下列说法中不正确的一项是（　　）

A．在月球上的宇航员交谈时要使用无线电设备

B．优美动听的乐曲一定不是噪声

C．声音在空气中的速度与温度有关

D．人对着高墙喊一声，人不一定就能听到回声

当你在一些特殊场合突然看到异常冒烟或突然闻到异常气味，怀疑可能是有毒气体时，应该采取什么样的紧急防护措施？

(C)

Driving a car at high speed along a highway seems to be fun. You need only to follow the bright traffic signs beside the highways and it will take you to where you wish.

But to a London taxi driver, driving is not an easy job. A taxi driver has to have not only good driving skills but also a good knowledge of the city of a London, from the smallest lane to the most popular bar around. He has to be at the service of all kinds of passengers at all times.

A certain London taxi driver told of his job as follows.

During the night it is quite usual for him to stop two or three times for some refreshments (点心). He said. "I never drink when I'm working ---- I would lose my licence."

He normally goes home between 2 and 3 O'clock in the night, There are times he has to stay longer and try to make more runs. He said, "That's the worst thing about working for yourself. If you don't make the money, no one is going to give it to you."

London taxi drivers not only ‘take' but also ‘give' , Every summer hundreds of children from London will go for a day at the sea--- by taxi! Their rides are paid by the taxi drivers, and these fares all go to the ‘London Taxi Fund for Underprivileged Children.' At the sea. they are met by the mayor, and a lunch party is also held in honour of the taxi drivers and the children. After a happy day running around the sea beaches and visiting the market, the children go home again-- by taxi, and free of charge, of course!

62. To be a London driver is not easy because ______.

A. he has to follow the bright traffic signs

B. he has to have good driving skills and know all the places in the city

C. he has to serve all kinds of passengers at all times

D. both B. and C

63. The London taxi drivers _______.

A. work hard because on one would give them money for doing nothing

B. never stop driving in the city

C. only work between 2 and 3 o'clock in the night

D. are very rich

64. The author of the passage says that _______.

A. the taxi driver works longer than is necessary

B. the more runs the taxi driver makes, the more he gets

C. the taxi driver doesn't like to work for others

D. the taxi drivers in the city go to the seaside to attend a party every year.

65. London taxi driver _______.

A. take money because they have to pay for the children's ride

B. go to the sea for a day in the summer

C. pay the fares for the poor children to the sea for a day once every year

D. give the poor children a free ride for a day at the sea once every year

66. The underlined words Underprivileged Children mean children _______.

A. of low income families                            B. who like to travel in taxi

C. who wish to go to sea but have no money      D. from London

在八百多年前，我国就发明了图这种流行于民间的玩具式走马灯，它的工作原理和近代的燃气轮机相同。如果点燃走马灯内的蜡烛，燃烧产生的高温气体将________（选填“向上运动”、“向下运动”或“绕蜡烛旋转”），运动的热空气便推动纸风车和固定在转轴上的纸马转动。这种走马灯工作时将内能转化为___________能。

Z44T－10，D9＝150中Z表示（）。

A.闸阀；

B.球阀；

C.截止阀；

D.安全阀;