单句改错。

1. This is (A) his (B) the best (C) book (D).                                     

2. He is (A) taller (B) than (C) any boy (D) in his class.                                

3. Which (A) do you like (B) best (C), this one or (D) that one?                             

4. Mike is (A) very (B) cleverer (C) than (D) Jack.                                  

5. Kate draws (A) best (B) of (C) her class (D).                                  

( )以上的员工能够接受的薪酬制度才可能是科学合理有效的薪酬制度。

A．50%
B．60%
C．70%
D．90%