下列物质性质的表述中,属于化学性质的是
A.铝呈银白色
B.碳酸易分解
C.食盐易溶于水
D.二氧化碳无色无味
B
题目分析:
Attention, please! All the mobile phones must _____ before the meeting starts. [ ]
A. turn off
B. be turned off
C. be turning off
But for the sun to give us light and heat, nothing _______ on the earth. [ ]
A. would live
B. will live
C. lived
D. would have lived