在一个大气压下,温度为()时,纯水的密度ρ=1000kg/m3。
A.0℃;
B.-4℃
C.1℃
D.4℃。
参考答案:C
June 12, Sunday, Fine
Today is Sunday. I didn't get up early as usually. In the morning after I finished my home-work, I do some washing. Then I telephoned one of my classmate and invited him to see a film. And unfortunately, when we got to the cinema at 300 p.m. we found all the tickets had sold out. So we went to our school and played the football. After that, when we were about to go home, we saw our English teacher, Mr. Wang, came into the school gate. He told us we had made many progress in English this term. He also suggested that we should read more and wrote more. We promised that we would take his advices.
19世纪晚期,欧美工人运动重新高涨的根本原因是
A.第二次工业革命使资本主义经济迅速发展
B.马克思、恩格斯对工人运动的指导
C.各国工人政党或组织的相继建立
D.各国工人罢工的次数不断增加