不同抗裂剂有不同的()。
参考答案:特性
she works hard ______ English and she does well ______ it. [ ]
A. at, in
B. in, at
C. with, in
D. in , in
某人拟进行一项投资,投资额为2000元,该项投资每半年可以给投资者带来50元的收益,则该项投资的年实际报酬率为()。
A.4%
B.5.06%
C.6%
D.5%