It seems that some people go out of their way to get into trouble．That's more or less what happened the night that Nashville Police Officer Floyd Hyde was on duty．
“I was on the way to a personal—injury accident in West Nashville．As I got onto Highway 40，blue lights and sirens(警笛)going，I fell in behind a gold Pontiac Firebird that suddenly seemed to take off quickly down the highway．The driver somehow flustered at the sight of me．He was going more than a hundred miles an hour and began passing cars on the shoulder．”
But Hyde couldn’t go after him．Taking care of injured people is always more important than worrying about speeders，so the officer had to stay on his way to the accident．But he did try to keep the Firebird in sight as he drove，hoping another nearby unit would be able to step in and stop the speeding car．As it．turned out，keeping the Firebird in sight was not that difficult．Every turn the Pontiac made was the very turn the officer needed to get to the accident scene．
Hyde followed the Pontiac all the way to his destination。At that point he found another unit had already arrived at the accident scene．His help wasn't needed．Now he was free to try to stop the driver of the Firebird，who by this time had developed something new to panic about．
“Just about that time，”Hyde says，“I saw fire coming out from under that car，with blue smoke and oil going everywhere．He'd blown his engine．Now he had to stop．”
“After I arrested him，I asked him why he was running。He told me he didn't have a driver's license．”
That accident cost the driver of the Firehird plenty-a thousand dollars for the new engine-not to mention the charges for driving without a license，attempting to run away, and dangerous driving．
小题1:The meaning of“flustered”in Paragraph 2 is related to .
A．shame
B．hate
C．anger
D．fear小题2:Why did the driver of the Firebird suddenly speed down the highway?
A．Because he was racing with another driver on the road．
B．Because he realized he had to hurry to the accident scene．
C．Because he thought the police officer wanted to stop him．
D．Because he wanted to overtake other cars on the shoulder．小题3:Which of the following statements is true?
A．Someone else was taking care of the injured person．
B．The Pontiac reached its destination at the accident scene．
C．Hyde knew where he was going by following the right car．
D．The policeman was running after a speeder on Highway 40．小题4:The driver of the Firebird .
A．took a wrong turn on the way
B．had some trouble with his car
C．was stopped by the police officer
D．paid for the expenses of the accident小题5:What is probably the best title for the article?
A．Losing His Way?
B．Going My Way?
C．Fun All the Way?
D．Help on the Way?
，由于向下运动，重力对 m一定做正功，A正确，M对m的支持力竖直向上，对m做负功，B正确；M对m的摩擦力水平向左，与位移夹角为锐角，因此摩擦力对m做正确，C错误；由于m从静止向下运动，一定做加速运动，根据动能定理，合外力一定对m做正功，D错误。