用石灰水、铜片、盐酸、碳酸钠、石灰石五种物质进行下列实验,其中无法完成的是( )
A:制氢氧化钠
B:制氯化铜
C:制二氧化碳
D:制氯化钠
89+11=____ 36+14=____ 98-28=____ 47-27=____
25×4=____ 16×5=____ 99÷11=____ 39÷13=____
24×5=____ 12×7=____ 125×4=____ 480÷60=____
Today is Friday. Betty, Lingling and Tom are talking about what they are going to do at the weekend.