A:黄海、渤海、东海、南海
B:东海、南海、黄海、渤海
C:渤海、黄海、东海、南海
D:南海、东海、黄海、渤海
在测量空气的相对湿度时,如何减小误差,提高测量数据的可靠性?
The students stopped talking__________ the teacher came into the classroom.
— . I prefer water.
— How many circles are there?
— There are circles.