以下对Excel表中单元格的表示不正确的是（）。A、AC5 B、A$5 C、$C$5

一只青蛙在平面直角坐标系上从点（1，1）开始，可以按照如下两种方式跳跃：

①能从任意一点（a，b），跳到点（2a，b）或（a，2b）；

②对于点（a，b），如果a＞b，则能从（a，b）跳到（a-b，b）；如果a＜b，则能从（a，b）跳到（a，b-a）．

例如，按照上述跳跃方式，这只青蛙能够到达点（3，1），跳跃的一种路径为：

（1，1）→（2，1）→（4，1）→（3，1）．

请你思考：这只青蛙按照规定的两种方式跳跃，能到达下列各点吗？如果能，请分别给出从点（1，1）出发到指定点的路径；如果不能，请说明理由．

（1）（3，5）；（2）（12，60）；（3）（200，5）；（4）（200，6）．

For a long time being happy was considered natural，and there was nothing special to do about it. Now we know that we can work at getting along well with other people. It is possible to act in such a way that other people will like us better.

One way is being unselfish，not wanting everything your own way or asking for the best share of everything, including the attention of your friends. Another way is to look for good points, not bad ones in other people.

You don’t have to be spineless(无骨气的)in order to be popular. In fact，you will be liked and respected(尊重)if you are not afraid to stand up for your rights(权利). But do it politely and pleasantly. One way to develop a good character is being friendly and polite to your own group,  to older people，to strangers and especially to those who do not look important or do not interest you.

You cannot expect to be perfect,  so you must learn not to be too unhappy when you make a mistake. Everyone makes mistakes, and no one is to be blamed unless he refuses to learn from them. Many young people become discouraged(泄气的) when they know their unpleasant qualities—selfishness，laziness，etc. Just remember that we all have some of these faults and have to fight against them.

When sometMng is wrong，it is best to try to make it right. Perhaps you don’t like a teacher or a classmate. Try to see why，and look at yourself，too. Make sure that you are not doing something to make others dislike you. In time, things may turn out all right, then you simply have to learn to get along the best you can with the situation, without thinking too much about it. Worrying never helps in a situation you can’t change.

小题1:Which of the following is the closest in meaning to the underlined part?

A．Not sharing anything with others.

B．Not thinking too much of yourself.

C．Not attracting the attention of your friends.

D．Not making friends with people who have bad points.小题2:How can we get along well with others according to the passage?

A．We should find out unpleasant qualities in others and in ourselves.

B．We should show others our unpleasant qualities.

C．We should stand up for our rights in any way we like.

D．We should fight against our unpleasant qualities.小题3:What can we know from the passage?

A．Even if we don’t have good relationships with others，we needn’t work at it.

B．Even if someone is not important to us，we still need to treat him politely.

C．Even if we are willing to learn from ouy mistakes，we are still to be blamed.

D．Even if the situation cannot be changed, we still need to worry much about it.

Bruce方案四级的能耗值为（）。

A.5代谢当量

B.7～8代谢当量

C.10代谢当量

D.14代谢当量

E.20代谢当量

如图所示的弹簧测力计的量程是 ______N，示数是 ______N．

免疫对机体是

A．有利的

B．有害的

C．有利也有害

D．有利无害

E．正常条件下有利，异常条件下有害