Which of the following activities is the most suitable for group work?
下列说法不正确的是( )
下列有关化学反应的描述中正确的是( )
Which of the following belongs to summative assessment?
The subject( s) of current teaching evaluation could be _.
The word “transistor” is formed by joining together the initial part of “transfer” and the final part of “resister”, and this word formation is called_______
In Chinese when someone breaks a bowl or a plate, the host or the people present are likely to say ---碎碎(岁岁平安)as a means of controlling the forces which they believe feel might affect their lives. Which function does it perform?
下列仪器,常用于物质分离的是()。
①漏斗 ②蒸发皿 ③托盘天平 ④分液漏斗 ⑤蒸馏烧瓶 ⑥量筒 ⑦燃烧匙
下列实验操作中,错误的()。