设f（x）是定义在实数R上的以3为周期的奇函数，若f(1)＞1，f(2)=2a-

胚胎在母体子宫中发育_____天 [ ]

A．360天

B．280天

C．300天

D．266天

阅读理解。

     When I was quite young, I discovered that somewhere inside the telephone lived an amazing person-

"Information Please" and there was nothing she did not know.　

     One day while my mother was out, I hit my finger with a hammer. The pain was terrible, but there

was no one home to give me any sympathy. I walked around the house, finally arriving at the telephone!

Quickly, I called "Information Please" and told her what happened. She told me to open the icebox and

hold a little piece of ice to my finger. After that, I called "Information Please" for everything. When my

pet bird died, I told "Information Please" the sad story. She tried to comfort me, she said quietly, "Paul,

always remember that there are other worlds to sing in." Somehow I felt better. Another day I was on

the telephone, "How do you spell 'grateful'?". All this took place in a small town in the Pacific Northwest.

When I was 9, we moved to Boston. A few years later, on my way to college, my plane put down in Seattle.

I had about half an hour or so between planes. Without thinking, I dialed my hometown operator and said,

"Information, please." 　　

     Surprisingly, I heard the small, clear voice I knew so well, "Information." I hadn't planned on this but

I heard myself saying, "Could you please tell me how to spell 'grateful'?" There was a long pause. Then

came the soft-spoken answer, "I guess your finger must have healed by now." I laughed. "So it's really

still you," I said, "I wonder if you have any idea how much you meant to me during that time." I told her

how often I had thought of her over the years and asked if I could call her again. "Please do," she said,"

Just ask for Sally."　　

     Three months later I was back in Seattle. A different voice answered me. I was told that Sally passed

away five weeks before. 　　

     Before I could hang up she told me that Sally left a message for me-"Tell him I still say there are other

worlds to sing in. He'll know what I mean." I thanked her and hung up. I knew what Sally meant. Never

underestimate the impression you may make on others. Whose life have you touched today?　

1. What does "Information, Please" refer to in the passage?

A. An amazing girl.

B. A special kind of telephone.

C. A communication system.

D. A service that helps telephone users.

2. What happened to the little boy one day when he was at home alone?

A. He was amused by the telephone.

B. He hurt his finger with a hammer.

C. He found an amazing telephone.

D. He got a piece of ice from an icebox.

3. What did "Information, Please" give the little boy whenever he was in trouble?

A. Information and conversation.

B. Good memories and happiness.

C. Sympathy and information.

D. Friendship and cheers.

4. When did the author get in touch with "Information, Please" again after he moved to Boston?

A. When he was in trouble on his way to college.

B. When his plane stopped in Seattle for half an hour.

C. When he went back to Seattle to visit his sister.

D. Three months later after he moved to Boston.

（1）（6分）关于机械振动和机械波，下列说法正确的是（    ）

A．机械波与电磁波的传播速度均与波源振动频率无关，并且均能在真空中传播

B．对于在空气中传播的声波来说，由于υ＝λ·f，所以频率越高，声速也越大

C．机械波和电磁波均能发生干涉和衍射现象

D．机械波可能是横波或纵波，而电磁波一定是横波（2）（9分）半径为R的玻璃半圆柱体的横截面如图所示，圆心为O。两条平行单色红光沿截面射向圆柱面，方向与底面垂直。光线1的入射点A为圆柱面的顶点，光线2的入射点为B，∠AOB＝60⁰。已知该玻璃对红光的折射率为n＝。（1）求两条光线经柱面和地面折射后的交点与O点的距离d。（2）若入射的是单色蓝光，则距离d将比上问中求得的结果大还是小？

企业家应具备的基本职业意识包括（）。

A.冒险意识

B.利润意识

C.负债经营意识

D.用户意识