①石墨②熟石灰③氯化钠④明矾⑤氮气
A. What did you do there?
B. What about you?
C. Where did you go yesterday?
D. Did you read storybooks?
Tina: Hello, Tony. ____
Tony: I went to the library.
Tina: ____
Tony: I read some interesting books. ____
Tina: I went to the zoo and saw many animals.
一理想变压器的原线圈为3300匝,接到110V的交流电源上,设副线圈输出电压为5.5V,电流20mA,则:
①有助于规避风险提高农民生产积极性 ②发挥了商业保险的经济补偿功能
③是政府规范市场经济秩序的重要方式 ④是社会保险的重要组成部分
把肯定句改成双重否定句
①我一定把这道题做出来。
②他答应了我们的请求。