下表是“唾液淀粉酶对淀粉的消化作用”实验步骤，根据此表回答下列问题：
| 实验步骤 | A试管 | B试管 |
| 加入1%浆糊 | 2毫升 | 2毫升 |
| 加入液体 | 2毫升清水 | 2毫升唾液 |
| 振荡后保温 | 37℃水浴10分钟 | 37℃水浴10分钟 |
| 加入碘液 | 冷却后加碘液2滴 | 冷却后加碘液2滴 |
（2）变成蓝色的是______试管．淀粉被分解的是______试管．（填A或B）
（3）A试管在实验中起______ 作用．
（1）人的体温是37℃，37℃就是人体进行各项生命活动的最适温度．
（2）A试管中没有淀粉酶等消化酶，淀粉不会被分解，滴加碘液后会变蓝；B试管中的淀粉被唾液中的淀粉酶分解成麦芽糖，滴加碘液后，不会变蓝．
（3）A、B两试管只存在一个变量，二者构成一组对照实验，其中A试管是对照组，起对照作用．
故答案为：
（1）生命活动
（2）A；B
（3）对照
| 完形填空 | ||||
| In some science fiction movies,the robots(机器人) are just like humans. They help with the housework and do the most unpleasant jobs. Some scientists believe that there will be such robots in the future. 1 ,they agree it may 2 hundreds of years. Scientists are now trying to make robots look like people and do the same things as us. But robot scientist James White 3 . He thinks that it will be difficult for a robot to do the same things as a person. 4 ,it's easy for a child to wake up and know where they are. Mr White thinks that robots won't be able to do this. But other scientists disagree. They think that robots will be able to talk to people 5 25 to 50 years. Robot scientists are not just trying to make robots look like people. For example,there are already robots 6 in factories. They do simple jobs over and over again. People would not like to do such jobs and would get bored. But robots will 7 get bored. In the future,there will be more robots everywhere, and humans will have less work to do. New robots will have many different 8 . Some will look like humans, and others might look like snakes. After an earthquake (地震) ,a snake robot could help look for people under buildings .That may not seem possible now, but computers,space rockets and even electric toothbrushes seemed impossible a hundred years 9 . We never know 10 will happen in the future ! | ||||
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