可乐定的主要不良反应（） A.嗜睡、口干 B.干咳 C.全身性红斑狼疮综合征 D.直

阅读下列材料：

材料一  19世纪中期，欧美各国对外贸易情况统计（单位：亿马克）

材料二 英国出口商品额在全部产品中的比重，1851年为1/4；1861年为1/3；1871年达到了3/5。

材料三 （英国）煤产量从1850年的4900万吨增至1870年的1.1亿吨。铸铁产量由1840年的140万吨增至1860年的380万吨。钢产量1870年达到22万吨。动力机械由1840年的35万匹马力增至1870年的90万匹马力……1850—1870年的棉花消耗量由5.88亿镑增加到11亿镑。

——以上材料均引自刘宗绪主编的《世界近代史》

小题1:根据材料一，指出1850—1870年各国贸易发展的特点。（2分）

小题2:根据材料二和材料三，你可得出什么结论？（3分）

小题3:谈谈你对上述材料中英国生产和贸易发展状况的认识。（5分）

We should learn from those ____ are always ready to help others. [ ]

A. who

B. whom

C. they

D. that

The journey two naval (海军) officers made some time ago to tile very deepest point on the earth makes us realize how much of the world still remains to be explored (探测). The two men went down several miles to the bottom of the Pacific Ocean hiding in a small steel ball called a “bathy-scaphe” to find out if there are any ocean currents (急流) or signs of life.

It was necessary to set ont early, so that the bathyscaphe would come to the surfacc in daylight, and so be easily found by the mother ship which would be waiting for it. The divers began preparations at dawn and soon afterwards, when all was ready, the steel ball disappeared under the surface of the water.

In time, the temperature dropped to freezing-point and the men trembled inside the ball. They kept in touch with the mother ship by telephone describing how they felt. Then, at a depth of 3 000 feet, the telephone stopped working and they were quite cut off from the outside world. At 30 000 feet, the men were surprised by a sudden, loud noise-------even the smallest hole in the ball would have meant instant death. Luckily, though, it was only one of the outer windows that had broken. Soon afterwards, the bathyscaphe touched the soft ocean floor, raising a big cloud of “dust” made up of different kinds of small, dead sea animals. Here, powerful lights lit up the dark water and the men were surprised to see fish swimming just above them quite untroubled by thc very large wate-pressure. But they did not dare to leave the lights on for long, as the heat from them made the water boil. Quite unexpectedly, the telephone began working again and the weak but clear voices of the officers were heard on thc mother ship. After a stay of thirty minutes the men began their journey up, arriving three hours later, cold and wet through, but none the worse for their experience.

小题1:The officers started their journey at dawn___.  

A．because they wanted to return to the mother ship in twenty four hours

B．because the sea then was calm

C．when the sun was not too strong

D．so that they could return before dark小题2:What did the officers find out at the bottom of the sea?  

A．They only found different dead sea animals.

B．They did find signs of life.

C．There was no signs of any life.

D．There was only dust.小题3:The journey to the bottom of the sea helped us to realize that______. 

A．much of the world hasn’t yet been explored

B．there are not any signs of life at the bottom of the sea

C．strong water-pressure has great effect on fish

D．powerful lights can not be turned on at the ocean floor without killing fish小题4:Which of the following is closest in meaning to “They were cold and wet through, but none the worse for their experience”?   

A．They were cold and wet through, which was the worst thing of all.

B．They were even worse than cold and wet through at the bottom of the sea.

C．Considering what they had just experienced, being cold and wet through was not too

bad.

D．For such an experience, being cold and wet through was not bad for them at all.

引起汇率变动的关键因素有( )。

A．GDP增长率

B．利率的相对变动

C．潜在总产出水平

D．外国直接投资

E．国内外价格水平的相对变动

由于风管内表面的不光滑，气体在风管内流动时会带来损失，风管（）损失越大，风管的弯曲布置也会产生损失，风量随损失增大而减小。因此在可以不用风管的场合尽量少用或不用风管。

A.风管越不光滑，风管越长

B.风管越不光滑，风管越短

C.风管越光滑，风管越长

D.风管越光滑，风管越短