【题目】已知f（x）＝2x5＋ax3＋bx－3，若f（－4）＝10，则f（4）＝（ ）

A．16 B．－10 C．10 D．－16

【题目】More and more scientific experiments prove that physical exercise can reduce the dangers of some illnesses in middle-aged persons．Exercise strengthens the heart muscle，reduces blood pressure and help to prevent muscles from changing into fat．Physical exercise is just as important for children．

Exercise and food affect growing speed in young lab animals．Baby mice start running as soon as they are big enough to use an exercise wheel in their cage．If they get extra food and run a lot，they will grow as much as 1.5 times bigger than normal．

The same differences in growing speed might be found between active and inactive children．Physical exercise helps active children grow faster than inactive children．One experiment shows that the brains of the mice that had enough exercise weighed about 3％more than those of the mice that did not exercise The mice that exercised are much quicker to learn doing new exercise than the mice that did not exercise．

The results of the experiments suppose the theory that exercise can help babies learn to talk and walk sooner than expected．

The good effects of physical exercise are not limited to children and middle-aged people．Exercise continues to be an important part of our lives after we grow old．For example，people over 50 years old begin to lose calcium(钙) from their bones，which get weaker and can break easily．Physical exercise，however，helps to strengthen the bones and to prevent them from losing calcium．Of course，old people can take medicines to prevent themselves from suffering from losing calcium．But the medicines they take increase the chance of developing some kind of cancer(癌)．So physical exercise is a much safer treatment(治疗)．

根据短文内容完成下列表格，一空一词。

【题目】--- May I help you? You seem to be having some problems.

--- , thanks. I think I can manage.（2012 .安徽）

A. All right

B. No problem

C. It’s all right

D. There’s no way

【题目】某超市将进货单价为10元的商品按12元一件的价格出售时，每天可销售80件，现在准备采用提高销售价格减少进货量的办法增加利润，已知这种商品每涨1元，其销售量就要减少10件，当该商品利润最大时，售价应定为________元.

【题目】对于函数f（x）＝ax2＋bx＋c（a∈R，且a≠0），在使f（x）≥M成立的所有实数M中，我们把M的最大值Mmax叫做函数f（x）＝ax2＋bx＋c的下确界，则f（x）=x2－4x＋6的下确界为________．

【题目】--- Look, here comes your dream girl. Invite her to dance.

--- . What if she refuses me? (2012．重庆)

A. I don’t know.

B. Why me?

C. With pleasure.

D. So what?

【题目】

--- I remember you were a talented pianist at college. Can you play the piano for me?

--- Sorry, I _ the piano for years. (2012．湖南)

A don’t play

B. wasn’t playing

C. haven’t played

D. hadn’t played

【题目】函数y＝－3x2＋6x－2的单调递减区间是（ ）

A．（－∞，1] B．[1，＋∞）

C．（－∞，2] D．[2，＋∞）

【题目】已知函数f（x），g（x）分别由下表给出．

则f[g（1）]的值为____________；当g[f（x）]＝2时，x＝__________．

【题目】--- Honey, the cat’s stuck in the tree. Can you turn off the TV and get a ladder. . . ?

--- Oh，it jumped off. (2012．江苏)

A. Never mind.

B. All right.

C. No problem*

D. Take care.