Inthe1700s,ascientistwassomeonewhothoughtaboutthewaythi...

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In the 1700s, a scientist was someone who thought about the way things work and tried to find out ways to make things work better. Today, that definition (定義) is still true. Every time Ben Franklin saw a question and tried to answer it, he was a scientist. Ben is most famous for his questions about electricity, but he also experimented with many other ideas in nature.

In 1743, Ben observed that northeast storms begin in the southwest. He thought it was strange that storms travel in an opposite direction to their winds. He predicted that a storm’s course could be charted (繪製). Ben rode a horse through a storm and chased a whirlwind three-quarters of a mile in order to learn more about storms. So, in a way, Ben was a weatherman too!

Since Ben spent so much time sailing to Europe across the Atlantic Ocean, he became very interested in both ocean currents and shipbuilding. Ben was actually one of the first people to chart the Gulf Stream.

In November of 1783, Ben happened to be in Paris, France working on a peace treaty (條約) to end the American war against England. From his hotel window, he was able to watch the world’s first known hot-air balloon flight. The balloon lifted the Montgolfier brothers off the ground as the first human beings ever known to fly. Ben was very interested in the idea of flight, predicting that one day balloons would be used for military (*事的) spy flights and dropping bombs during battle. Soon, balloons were actually being used for entertainment, military, and scientific purposes. Even though they could not yet be steered, many people volunteered to take a ride just for fun! Sadly, Ben Franklin died three years before the first American hot-air balloon voyage. In 1793, Jean-Pierre Blanchard lifted off from the Walnut Street Prison Yard in Philadelphia, beginning the hot-air balloon craze in America.

46. What can we learn from the first paragraph?

     A. Ben Franklin was a true scientist.                          

     B. Ben Franklin could hardly be called a scientist.

     C. Ben Franklin was most interested in electricity.  

     D. Ben Franklin was only interested in things in nature.

47. What did Ben Franklin find about storms?

     A. They start following their winds.

     B. They usually begin in the southwest.

     C. They travel in an opposite direction to their winds.

     D. They travel in the same direction as their winds.                   

48. Ben Franklin went to Paris in November of 1783 to 　　　.

     A. sign a treaty                           B. have a talk with Britain

     C. seek support from France       

     D. experiment with hot-air balloons

49. When Ben Franklin saw the first known hot-air balloon flight, he predicted hot-air balloons 　　　.

     A. would be a risky sport

     B. could be used in wars

     C. couldn’t be widely used in the future

     D. would be mostly used for entertainment

50. We can infer from the last paragraph that Ben Franklin 　　　.

     A. introduced hot-air balloons to America

     B. saw the hot-air balloon flight by accident

     C. was not interested in hot-air balloons at first

     D. made a wrong prediction about hot-air balloons

【回答】

ACABB

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