问题 问答题 简答题

对加臭剂的要求?

答案

参考答案:

加臭剂和燃气混合在一起后应具有特殊的臭味,不应对人体、管道或与其接触的材料有害,其燃烧产物不应对人体呼吸有害,并不应腐蚀或伤害于此燃烧产物直接接触的材料。

完形填空

We have a big playground in our school .We all like to 46  games on the playground  47  school .It’s Friday. We have only two classes 48  the afternoon .  49  school is over, a lot of students go to the playground quickly.  The boys of Grade Two often  50  soccer. The girls like  51  them playing soccer. Soccer is their favorite sport . Their teacher Mr. Li also  52  football. Li Ming , Li Lei and Wei Fang are students of Grade One. They sometimes play soccer  53  the students of Class Two. It’s half past five  54  . It’s time  55  dinner . My father is waiting for me at the school gate .

小题1:A. do                 B. make               C. play

小题2:A. after               B. before               C. on

小题3:A. on                 B. in                  C. at

小题4:A. Where              B. What               C. When

小题5:A. have               B. do                  C. play

小题6:A. seeing              B. reading              C. watching

小题7:A. playing             B. plays                C. to play

小题8:A. to                  B. of                  C. with

小题9:A. here               B. now                C. then

小题10:A. has                 B. to have              C. having

名词解释