⑴ ____
⑵ ____
⑶ ____
⑷ ____
⑸ ____
A.Show me your marker.
B.Touch your desk.
C.Show me your English book.
D.Touch your chair.
E.Show me your Chinese book.
A.氯化钙﹣碱 B.碳酸钙﹣盐 C.钢筋﹣单质 D.聚氯乙烯﹣____.
除温度外,请再列举2个影响实验结果的其它变量____ 。