问题 选择题

下列图象中x轴表示社会劳动生产率,y轴表示单位商品价值量。其中正确反映两者关系的是

答案

答案:A

题目分析:单位商品的价值量由生产该商品的社会必要劳动时间决定,和社会劳动生产率成反比,即随着社会劳动生产率的提高,单位商品的价值量降低,A正确,B错误;C意味着无论社会劳动生产率怎么变化,商品的价值量都一样,明显错误;D是价值规律的表现形式,价格由价值决定,受供求影响,和题意无关。

单项选择题
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Sam, an unemployed piano tuner, said it was only the second thing he had ever won in his life. The first thing was an Afghan blanket at a church raffle when he was 25 years old. But this was much bigger: it was $120,000! He had won the Big Cube, a state lottery game. To win, a contestant must first guess which number a spinning cube will stop on. The cube has six numbers on it: 1X, 10X, 50X, 100X, 500X, and 1000X. If he is correct, the contestant must then guess which of two selected variables is going to be greater. So, just guessing which number appears on the cube does not guarantee that you will win any money. Sam correctly guessed 1000X, but he still had to choose between two variables. One variable was the number of cars that would run the stop sign at Hill Street and Lake Avenue in six hours. The other variable was the number of times that a teenage boy would change TV channels in a three-hour period. This was a tough decision.

Finally, Sam flipped a coin. It came up heads, so Sam picked the teenager. He picked right. The stop sign was run only 76 times, but the teen clicked 120 times. Sixty-year-old Sam jumped for joy, for he had just won 1000 times 120, or $120,000. Sam dreamily left the lottery studio. Talking excitedly on his cell phone while crossing the street, he got hit by a little sports car.

Sam is slowly getting better. He was in the hospital for a month. His hospital bill was $110,000. And the insurance company for the little sports car's owner sued Sam for $9,000 worth of repairs. Also, Sam still has to pay federal taxes on his winnings. Sam doesn't play the state lottery any more. He says it's better to be unlucky.

小题1:When Sam won the second thing that he’d won in his life, he was ______.  

A.25 years old

B.six years old

C.76 years old

D.sixty years old小题2:To win the game, the contestants had to make ______ guesses.    

A.three

B.two

C.six

D.four小题3:Sam won the lottery because ______.

A.he was lucky

B.he was good at math

C.he was smart

D.he was tough小题4:Sam’s experience shows that ______

A.everything has its time and that time must be watched.

B.he who risks nothing, gains nothing.

C.everything comes to him who waits.

D.he who laughs on Friday will weep on Sunday.