问题 填空题

标准粉适宜做()等食品。

答案

参考答案:烙饼、烧饼

完形填空

根据短文内容,从短文后的选项中选出能填入空白处的最佳选项,写在答题纸相应的位置。选项中有两项为多余选项。

I was ten when I first sat with my grandmother behind the cashier(收银台)in her general store.      小题1:        I quickly learned the importance of treating customers politely and saying “thank you.”

At first I was paid in candy.       小题2:       I worked every day after school, and during the summer and on weekends and holidays from 8 a.m. to 7 p.m. My father helped me set up a bank account.     小题3:By the time I was 12, my grandmother thought I had done such a good job that she promoted me to selling cosmetics(化妆品). I developed the ability to look customers directly in the eye. Even though I was just a kid, women would ask me such things as “What color do you think I sho uld wear?” I took a real interest in their questions and was able to translate what they wanted into make-up ideas.   小题4:      .

The job taught me a valuable lesson: to be a successful salesperson, you didn’t need to be a Rocket scientist—you needed to be a great listener.    小题5:     and expect they are no longer women purchasing cosmetics from me; instead, they are kids who tell me which toys they would like to see designed and developed.

A.Later I received 50 cents an hour.

B.Before long, she let me sit there by myself.

C.I ended up selling a record amount of cosmetics.

D.Today I still carry that lesson with me: I listen to customersE. My grandma’s trust taught me how to handle responsibility.

F. Soon I found myself looking more beautiful than ever before.

G. Watching my money grow was more rewarding than anything I could have bought.

问答题

实验室均可选择①带火星的木条、②燃着的木条、③澄清石灰水、④紫色石蕊试液四种实验用品中的任意一种来鉴别的两种常见气体是(写物质名称)______和______.

(1)在实验室都可以利用下图中的A装置制取上述两种气体(图中的分液漏斗可以通过调节活塞控制液体的滴加速度).如图所示,回答问题:

①分别写出实验室利用A装置制取上述两种气体的化学方程式:____________.

②制取这两种气体,只能用B装置收集的是(写化学式)______;既能用B装置又能用D装置收集的是(写化学式)______,其中用______(填字母)装置收集的气体更纯净;这两种气体都不能用C装置收集的原因是______.

③前文提到,用澄清石灰水可以鉴别这两种气体,写出其中一种气体跟澄清石灰水反应的化学方程式______

④在催化剂作用下制取上述的某种气体时,装置A中反应很剧烈,据此提出实验安全的注意事项是______(填序号).

A.控制液体的滴加速度B.用体积较小的锥形瓶C.加热反应物

(2)实验室还可以利用下图装置制取其中的某一种气体.

①任意写出一个可利用此装置制取这种气体的化学方程式______.

②实验室制取这种气体的步骤主要分以下七步,请按正确操作顺序,把序号填在横线上.______.

A.将药品装入试管,并塞上塞子.

B.移开并熄灭酒精灯.

C.点燃酒精灯,先给试管预热,再集中给药品加热.

D.用铁架台和铁夹把盛有药品的试管固定起来.

E.检查装置的气密性.

F.气泡连续且均匀放出来时,收集一瓶气体.

G.将导气管从水槽内取出来.