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certain college(大学) in America was having trouble(麻烦) with its boy students. The weather was so
bad that the students must stay indoors(在室内). Since they could not enjoy(享受) their sports outside,
they were unhappy, and some of them even got into fights(争斗).
Finally one of the teachers at the college, J.E. Naismith, was asked to invent(发明) a new game for
the students. It was not an easy job because such a game had to be played indoors, and the court(球场)
was not very large.
Naismith thought for a few days and invented a kind of ball game. It was a fast, exciting game with
much moving and passing. It was played between two teams. To make a score, the ball had to be thrown
into a basket ten feet(英尺) high above the floor on the wall. At each end of the court there was a basket. At first, Naismith had planned to have the ball thrown into a box. As he could not find boxes of the right
size, he had to use fruit baskets instead. That is how the game got its name.
B. A hundred years old.
C. More than a hundred years old.
D. We don't know.
B. Because they were unhappy.
C. Because they wanted to play basketball.
D. Because the weather was so bad.
B. A teacher in America.
C. A man.
D. A, B, C are all right.
B. The students named it.
C. The ball had to be thrown into a basket on the wall.
D. We don't know.
B. 球场
C. 教室
D. 院子
写出下列动词的原形和第三人称单数形式
1．吃 ______ ______
2．喜欢 ______ ______
3．阅读 ______ ______
4．听 ______ ______
5．去 ______ ______
查看习题详情和答案>>阅读短文，并按要求完成1—5题。
Failure is what often happens. It is everywhere in our life. Students may fail in exams, scientists may fail in their research work, and players may fail in competitions. Although failure happens to everyone, different people’s attitudes(态度) towards failure are different.
Some people don’t think that their failure is an important thing at all. So they pay no attention to it. As a result, they will have the (A) failure later. Some people think they themselves are fools and lose their hearts in everything after they get a failure. Then they(B) their time and energy on useless things. At last, they may really be fools as they have thought.
（C）Other people are quite different from these two kinds of people mentioned above. Instead of being hopeless and lost, they draw a lesson from every failure and become more experienced. They will be successful after hard work in the end. So we should draw a lesson from every failure and become more experienced.
1题为判断正误，2补全句子，3翻译成汉语，4为回答问题；5找主题句。
1.Failure happens to everyone. ( )
2.在( A )、(B)处的横线上分别填上一个单词（A） （B）
3.将(C)处句子译成汉语：
_______ _____________ ______________________________.
4.Why do some people pay no attention to their failure?
________________________ .
5.请找出第三段的主题句，写在横线上__________________________________________.
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（1）若图甲是癌细胞的细胞膜，则膜上含量较正常细胞减少的物质是[ ] 。
（2）若图甲是线粒体膜，b和c过程运输的气体分别是 。b、c运输方式符合图 所表示的物质运输曲线。
（3）若图甲表示人体红细胞膜，则表示Na＋、K＋运输的分别是图中 。Na＋、K＋的运输方式符合图 所示曲线。
（4）已知红细胞吸收葡萄糖是协助扩散，而有人认为小肠上皮细胞以主动运输的方式吸收葡萄糖，请设计实验加以确定。
①实验步骤：
第一步：取甲、乙两组生理状况相同的小肠上皮细胞，放入适宜浓度的含有葡萄糖的培养液中。
第二步：甲组细胞给予正常的呼吸条件， 。
第三步： 。
②预测实验结果并分析：
a．若甲、乙两组细胞对葡萄糖的吸收速率基本相同，则 。
b． 。 查看习题详情和答案>>