It’s very important that we all recycle (再利用). In nature, everything ___26___ again. For example, when an animal dies, it becomes ___27____ animal’s food. Nothing is wasted. But humans have created things like plastic bags ___28___ can’t be broken down by nature. Our rubbish kills animals and __29___ water and soil. ___30___ we continue making too much rubbish, the problem will only get worse. If nature can’t reuse the rubbish, we must recycle __31__.

We should clean up the rubbish we’ve made because nature can’t.

Recycling is also the right thing to do for another reason. The earth is rich in natural materials like water and trees, __32 __ these materials are not endless. We use up our natural materials much _ _33 __ than the earth is able to reproduce them. For example, each year we cut __34 __ more that 6,000 square miles of forest. But it takes an average of 25 years for a new tree __35__.

Recycling can help us save the earth, so let’s take action right now.

1.A. use                B. using               C. is used             D. used

2.A. another             B. other               C. others              D. the other

3.A. who               B. which               C. how               D. where

4.A. pollutes            B. polluted              C. polluting           D. is polluted

5.A. When              B. Whether             C. Why               D. If

6.A. them               B. their                 C. it                 D. itself

7.A. but                B. so                   C. and               D. or

8.A. fastly              B. fast                  C. taster              D. fastest

9.A. out                B. down                C. in                 D. up

10.A. grows              B. for growing           C. growing           D. to grow

 

有如下图所示的探究性实验装置共6个，6个装置中分别加入葡萄糖饱和溶液和两个凝胶珠，实验开始时，小液滴都在c点（刻度管足够长，瓶内氧气充足）。6个装置分别置于0℃、15℃、25℃、35℃、45℃、55℃温度下10分钟后记录各个装置中的小液滴位置，并描绘出坐标曲线图（如甲曲线）

（1）实验的目的是                                ，自变量是                。
（2）瓶中氢氧化钠溶液的作用是          ，小液滴移动的距离表示         。
（3）实践上如果通过固定化醋酸菌生产醋酸，那么制备的凝胶珠大小与固定化酵母菌生产酒精相比，应该注意什么问题?为什么?
（4）如果制备固定化醋酸菌细胞实验中，海藻酸钠浓度过低，请在坐标系中画出实验开始10分钟后的曲线乙。
（5）工业生产中利用固定化细胞技术进行生产，从哪些方面可以达到延长利用固定化细胞的时间（至少两点）?

  We use the Internet for many things: business, shopping, writing letters, talking to people, finding information and so on. In recent years a new kind of English has grown on the Internet. There’s no real word for it yet, so we’ll call it e-talk. People don’t like typing too much. To save time, they turn phrases into a few letters called acronyms. Acronyms are often used in chat rooms. Some of them are
BTW (by the way)        BRB (be right back)
LOL (laughing out loud)    IMO (in my opinion)
People also use many abbreviations(缩写). They are shortened forms of words. Some common abbreviations are:
Info(information)       puter (computer)
Pie(picture)           sec (second)
We usually don’t see people when we communicate on the Net, so people have new ways to show feelings. Most people use their keywords to draw “feeling”, such as:
:-)(happy)    :-p(joking)   :-( (sad)    :-0 (surprised)
These days, many forums(论坛) have picture feelings. For example,

(sad)      (happy)
There are even whole new words, like“newbie’s”(someone who is new on a chat board or forum).
It takes time for people to get used to e-talk. Also, different groups on the Net have their own special ways of communicating. Newbie’s have to ask other people what they mean. As the Internet grows, e-talk will continue to grow and change.
【小题1】What does the underlined word “acronyms” mean?

A．网友

B．聊天室

C．首字母缩写词

D．关键词

【小题2】Why do people type acronyms?

A．To show their feelings.

B．Because people can type them quickly.

C．In this way newbie’s won’t understand them.

D．To make people use Internet

【小题3】What does “BTW, my puter is not working well. :- ( ” mean ?

A．The person is angry at somebody.

B．The person is happy about getting a new computer

C．The person is sad that his computer is having problems.

D．The person is joking that his computer is having problems.

【小题4】E-talk will probably _______.

A．keep changing

B．be easy by people on the telephone

C．be used by people on the telephone

D．make life easier

【小题5】What’s the best title for this passage?

A．E-talk Language	B．Picture Feelings
C．How to Use Abbreviations	D．use the Internet

如图14所示是探究平面镜成像特点的实验装置图。将一块玻璃板竖直架在一把刻度尺的上面，并保持玻璃板与刻度尺垂直。再取两根完全相同的蜡烛A和B分别竖直置于玻璃板两侧的刻度尺上，点燃玻璃板前的蜡烛A，进行观察和调整。用此实验可以研究：①像与物大小的关系；②像与物到平面镜距离的关系；③平面镜成的是虚像还是实像。
（1）选用刻度尺的作用是为了便于比较_________；（选填“①”、“②”或“③”）
（2）选用两根完全相同的蜡烛是为了比较________；（选填“①”、“②”或“③”）
（3）在利用蜡烛B确定出蜡烛A所成像的位置后，移去蜡烛B，并在其所在位置上放一光屏，则光屏上_________（选填“能”或“不能”）接收到蜡烛A的像。

在“构建和谐校园”的活动中，李雷被评为“文明之星”。你是他的好朋友，请用简短的英语对他进行介绍，并写一句你最想对他说的话。

Li Lei is my good 76  He is quite friendly and helpful. He is always trying to help

   77    He does well in all his 78   And he has many different  79 of hobbies.

He is always well-behaved. He sets us all a good example. He is the hero in our heart.

写一句你最想对他说的话：               80