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46、 Mr．Hill __.
A． only remembers one of Jack's seventeenth birthdays
B． always sends Jack something on his birthday
C． has forgotten all of Jack's birthdays
D． has forgotten Jack's seventeenth birthday

47、 Last week Mr．Hill
A． was pleasant
B． was quite astonished
C． was quite disappointed
D． was unpleasant

48、根据以下资料，回答48-67题。 　　The first true piece of sports equipment that man invented was the ball.
　　In ancient Egypt, as everywhere, pitching stones was a favorite children's game．But a badly thrown rock could hurt a child．Looking for something less dangerous to throw, the Egyptians made what were probably the first balls.
　　At first, balls were made of grass or leaves held together by vines．Later they were made of piece of animal skin sewed together and stuffed with feathers or hay.
　　Even though the Egyptians were warlike, they found time for peaceful games．Before long they had developed a number of ball games, each with its own set of rules．Perhaps they played ball more for instruction than for fun．Ball playing was thought of mainly as a way to teach young men the speed and skill they would need for war.
The ball was probably invented because __．
A． throwing stones often caused injuries
B． throwing stones was not fun
C． games with stones did not have rules
D． rocks were too heavy to throw

49、 This selection says that the Egyptians played __.
A． many different games with balls
B． many different kinds of games
C． only one ball game
D． different games with similar roles

50、 The Egyptians thought that ball playing was __.
A． childish
B． difficult
C． not enjoyable
D． worthwhile

51、 The best title for this selection is __.
A． The First Ball Games
B． How Egyptian Children Played Games
C． Egyptian Sports
D． The Beginning of Sports

52、 What is the writer's attitude toward Shot Spooters?
A． Be indifferent to i
B． Be for i
C． Be against i
D． Be angry at i

53、根据以下资料，回答53-72题。 　　It used to take Redwood City, California police hours to locate gunfire．Now, they have a new tool that helps them find the gunfire quickly．This new tool is called the Shot Spotter, The police began using the Shot Spotter in 1995．They wanted to cut down on gunfire in their city.
　　One Shot Spotter covers a square mile．Eight microphones are put on the roofs of buildings．These microphones pick up gunfire noise．It only takes seven seconds to report the gunfire to the police．Then a red dot on the police map shows where the action is.
　　The Shot Spotter really works well．It locates the gunfire within 20 to 40 feet plus or minus．Redwood City police are very happy with the Shot Spotter．They think it might have helped catch the D.C．sniper.
　　Shot Spotters cost a lot of money．One of them sells for $200,000．Despite the cost, Shot Spotters can be a big help in fighting crime.
Eight microphones placed on rooftops __.
A． talk to police
B． warn the public
C． listen for gunfire
D． play rap music

54、 The red dot on the police map shows __.
A． the address of the criminal
B． Redwood City
C． the capital of California
D． the location of the gunfire

55、 The Shot Spotter has helped police __.
A． a little bit
B． cut down the use of weapons
C． tremendously
D． solve all the shootings