题目内容
（请给出正确答案）
A．He looks happier lately.
B．He manages his time well.
C．He's improved the way he looks.
D．He follows directions more carefully now.
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B．To do it in an organized way.
C．Not to get too close to a storm.
D．To spend more time on it in summer.
Imaginations were fired. Men dreamed of going to work in their own personal helicopters. People anticipate that vertical flight transports would carry millions of passengers as the airliners of today do. Such fantastic expectations were not fulfilled. The helicopter has now become an extremely useful machine. It excels in military missions, carrying troops, guns and strategic instruments where other aircraft cannot go. Corporations use them as airborne offices, many metropolitan areas use them in police work, construction and logging companies employ them in various advantageous ways, engineers use them for site selection and surveying, and oil companies use them as the best way to make offshore and remote work stations accessible to crews and supplies. Any urgent mission to a hard-to-get-to place is a likely task for a helicopter. Among their other multitude of uses: deliver people across town, fly to and from airports, assist in rescue work, and aid in the search for missing or wanted persons.
(30)
A．Helicopters have only been worked on by man since 1940.
B．Chinese children were the first to achieve flight in helicopters.
C．Helicopters were considered more dangerous than the early airplanes.
D．Some people thought they would become widely used by average individuals.
A．people spent more money than they earned
B．people saved more money than before
C．people spent their money wisely
D．people invested and consumed at an accelerated pace
A．genetics has achieved a breakthrough for family trees
B．genetic information contained in DNA can be revealed now
C．each individual carries a unique record of his relation to others
D．we can use DNA to prove how distant an individual is to a family
A．Y
B．N
C．NG
B．It is unnecessary to rent another house.
C．They should sell their second -hand car and buy a new one.
D．They can afford a second-hand car.
B．The people sitting next.
C．The people sitting in front of him.
D．The people standing in the back.
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