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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>>
（1）A代表 分子，B代表 ，D代表 ；
（2）动物细胞吸水膨胀时B的厚度变小，说明B具有 。
（3）维生素D和葡萄糖从肠腔进入小肠上皮细胞的过程分别是图中编号 。
（4）若图甲是癌细胞的细胞膜，则膜上含量较正常细胞减小的物质是[ ] 。
（5）若图中是线粒体膜，b和c过程运输的气体分别是 。b、c运输方式符号图 所表示的物质运输曲线。
（6）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＋的运输方式符合图中 所示曲线。
（7）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、乙两组生长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>>
True or False （判断下列句子是否符合短文内容，符合的用"T"表示，不符合的用"F"表示）：（7分）
Richard is an exchange student from the USA. He is teaching his friends at Rose Garden School how to play Softball. He is explaining the rules.
Richard: First, we need a bat, a ball and some bases.
Ben: What are bases?
Richard: They are flat squares that show you where to run. After you hit the ball, you have to run around the bases.
If you stand on a base, you are safe. If you are running to a base, and the other team touches the base with the ball, then you are out.
Jennifer: Oh, I see. How would I hit the ball?
Richard: Have you seen baseball on television?
Jennifer: I have.
Richard: Well, Softball is like baseball, only the ball is bigger and softer too.
Jennifer: Do you like volleyball? I love it.
Richard: I like to play beach volleyball. It's different from volleyball.
Ben: How?
Richard: In beach volleyball, you only have two people on each team and the court is smaller.
Jennifer: Do you play on the beach?
Richard: Yes. It’s good because if you dive for the ball, you don’t hurt yourself.
Ben: Do you play football at your school?
Richard: Which kind of football?
Jennifer: I don't understand there more than one kind? I thought everyone play the same kind of football.
Richard: No. In the USA, we have football and soccer. Soccer is a game that is played around the world.
In other countries, soccer is called football. In the USA, we also play a different game called football.
In this game, you throw the ball and you have to wear a helmet to play.
Jennifer: Well, I want to play softball.
1. The rules for playing softball are nearly the same as those for playing baseball.
2.In a softball game, if your team is running to a base and the other team touches the base with the ball, you are safe.
3.A baseball is smaller and harder than a softball.
4.Richard is teaching his friends how to play softball.
5. According to Richard, playing beach volleyball is much more dangerous than playing volleyball.
6. Jennifer thought that the word 'football' had only one meaning.
7.In the USA, 'soccer' is also called 'football'.
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Singapore is not just a clean and tidy city in the world, it's also the greenest. There are (A) 三个原因why it is so.
Say "No" to waste
Singaporeans do not waste a single drop of water. They recycle water and save( B ) almost all rainfall. The water can be used for industry （工业） and even drinking.
Many "green" buildings
The Duke-NUS Graduate Medical School is one of the great examples of (C) pretty green design. It uses sustain-able design elements (可持续发展的设计元素) in its school building. ( D ) Singapore has many green buildings like this.
Get them while they're young
The Green Singapore 2050 (GS2050) is a community platform (社区平台) for young people to express their great worries about environmental problems, and think of solutions for(E) them. Why 2050'？It's because these young people will be the ones to run the country in 2050, and hopefully they will solve the world's problems.
1.将文中划线部分(A)译成英语。________________________
2.写出文中划线部分(B)和(C)的同义词或近义词。______________________
3.将文中划线部分(D)改写为There _______ many green buildings like this ______ Singapore.
4.文中划线部分(E)指代的是：__________________
5.从文中找出能说明本文主旨大意的中心词。_________________
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为了进一步增强中学生的安全意识，提高自我保护能力，某校开展了以"安全为主题的英语演讲比赛。请你根据以下要点提示写一篇演讲稿。
注意：1)内容必须包括所给的全部要点，可适当发挥；
2)表达清楚，语句通顺，意思连贯，书写规范；
3)词数80左右。文章开头已给出，不计入总词数。
参考词汇：be careful, on line, danger, call...for, go bad
How to keep safe?
As teenagers we should always keep safety in mind. But how can we keep safe? Here are some of my suggestions.
First, _______________________________________________________________________________
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