我们的老师在传授知识的同时，更关注学生养成守纪的品质，培养良好的行为习惯，学会尊重，学会合作，有礼貌有教养，常怀感恩之心。这主要在说明老师是（ ）
Hello! I'm Petty. This is my day. It's six forty. It's time to get up. It's seven o'clock. It's time to go to school. It's eleven thirty. It's time for lunch. It's four twenty. It's time to go home. It's eight thirty. It's time to go to bed.
⑴ ____
⑵ ____
⑶ ____
⑷ ____
⑸ ____
A. B. C. D. E.
B. 
C. 
D. 
E. 
2NH3，3 min后测得密闭容器内的压强是起始时的0．9倍，在此时间内v(H2)是( )