Could you tell me the way ________ the library? [ ]
A. in
B. at
C. on
D. to
答案:D
把甲数的小数点向左移动两位就是乙数的20%,那么乙数是甲数的______%.
聚酯熔体中二甘醇的含量高,则熔体的熔点会升高。()