为探究“废电池对生物的影响”，某研究小组设计了如下实验步骤：
①将一节用过的五号电池破碎，浸泡在1000mL清水中3天，过滤得到滤液。②四只鱼缸分别贴上A、B、C、D标签，并在鱼缸中都加入5000mL清洁无污染的河水。③在A、B、C、D四只鱼缸中，依次加入50mL、100mL、200mL、400mL的电池浸出液。④再向各鱼缸中分别加入三条大小和生活状态差不多的小金鱼，定时喂等量同种饲料，观察并记录情况。

结果如下表： 

                      A    B    C    D
所加浸出液的体积(mL)  50  100  200  400
小鱼存活的时间(天)    15   12   7    1
根据以上设计，请回答下列问题：

（1）该小组同学提出的问题是：__________________________________________________。

（2）根据表中的数据可知，水中电池浸出液的浓度越大，金鱼存活的时间就越_______。

（3）由此，该小组同学得出结论：废电池对生物有影响。你认为他们这样得出结论严谨？
答：__________。为什么？_________________________________________。

（4）请你对使用过的电池如何处理作出合理化的建议：_______________________。

　　Tom is a postman. He gets home from work at 6∶00 today. He takes the elevator（电梯）to his sixth-floor apartment（公寓）. He opens the door and sees water on the floor. First, he goes to the kitchen and the sink（水池）isn't leaking（漏水）. Then he goes to the bathroom and the toilet isn't leaking. Finally he goes to the living room and looks up the ceiling（天花板）. The light is leaking.

　　Ten minutes later, a policeman called Tony, comes to his house. He's very helpful. They come to the seventh floor. They open the door to Mr Green's apartment. They see a lot of water on the floor. Mr Green's sink in the kitchen is leaking. There is water everywhere. Tony helps Tom turn off the tap（水龙头）. They clean up the water on the floor.

A．The sink in the kitchen.

B．The toilet in the bathroom.

C．The light in the living room.

(4) What does the word“worded”mean?

A．The toilet in Tom's apartment isn't leaking.

B．Mr Green is out.

C．Tony comes to help Tom half an hour later.

First e-book with colour display (彩色显示)
Maker: Fujitsu                     Launched (投放市场): March 18
Weight: 458g                      Colour display: 260,000 colours
Battery(电池) power: 48 hours        Price: about $1,000
Screen: 20.3 cm                   
Store about 5,000 books (using 4GBSD memory card)
Connectivity: Internet Wi-Fi(无线上网)，Bluetooth，USB connector
阅读以上信息，完成下面的短文，每空一词。
According to the information above, we know that the first e-book with colour display was made in the company    【小题1】  Fujitsu. It was available(可获得的) for sale on March. It   【小题2】   nearly half a kilo. It can be used two whole   【小题3】   if its battery fully charged(充电). The length of the screen is 20.3 cm. It can keep five   【小题4】   books. This kind of e-book has three more functions(功能): Wi-Fi，Bluetooth and USB connector. Each e-book    【小题5】  about 1,000 dollars. It is much too expensive for us students.

First e-book with colour display (彩色显示)

Maker: Fujitsu                     Launched (投放市场): March 18

Weight: 458g                      Colour display: 260,000 colours

Battery(电池) power: 48 hours        Price: about $1,000

Screen: 20.3 cm                   

Store about 5,000 books (using 4GBSD memory card)

Connectivity: Internet Wi-Fi(无线上网)，Bluetooth，USB connector

阅读以上信息，完成下面的短文，每空一词。

According to the information above, we know that the first e-book with colour display was made in the company    1.  Fujitsu. It was available(可获得的) for sale on March. It   2.   nearly half a kilo. It can be used two whole   3.   if its battery fully charged(充电). The length of the screen is 20.3 cm. It can keep five   4.   books. This kind of e-book has three more functions(功能): Wi-Fi，Bluetooth and USB connector. Each e-book    5.  about 1,000 dollars. It is much too expensive for us students.