– Unfortunately, I won’t have time to visit the World Expo 2010 _____ I’m in Shanghai.
– What a great pity!
A. until B. since C. while D. unless
科目：高中英语 来源： 题型：054
Today, when a man steps onto the moon, the __(1)___ learns about it immediately. What did the __(2)___ say about that first flight in 1903? Strangely enough, they said hardly __(3)___ about it at all. There were only a few reports about it in the papers. These reports said very __(4)___. Some of the things they said were not even __(5)___.
In 1904 the Wrights built a __(6)___ machine. They called it“Flyer No. Two”. They __(7)___ some reporters to watch them fly. __(8)___ there was some mechanical（机械的）trouble with the plane and it did not fly at all that day. The newspapermen __(9)___ away. They were __(10)___ and did not come back. The Wrights went on with their __(11)___. In 1905 they built an even __(12)___ machine,“Flyer No. Three”. They were able to __(13)___ up in the air for half an hour and more in this machine. They were able to turn and climb in the air. Farmers and travellers often saw them __(14)___. But when these people told newspapermen about it, they __(15)___ to believe them.
The Wrights __(16)___“Flyer No. Three”to the United States Government. The Government was not __(17)___ They seemed to think the Wrights wanted money to build a __(18)___ They did not understand the Wrights had already done this, and flown it as well. Experts were still saying that mechanical flight was __(19)___. At the end of 1905, the two __(20)___ took their plane to pieces. The parts were put into a huge box. It seemed nobody was interested.
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