下列物质中,难溶于CCl4的是[ ]
A.碘单质
B.水
C.苯
D.甲烷
答案:B
哲学上的物质是指( )
A.具体的物质形态
B.无法被人感知的客观存在
C.人们能看得见、摸得着的东西
D.在意识之外独立存在的客观实在
As is known to us, theory is based on practice and servers practice.
A. by chance B. in turn C. in return C. by turn