—Are you pleased with the result of the exam?— Not at all, I can't have _______.
A:a worse one
B:a better one
C:the worse one
D:the best one
下列物质不会使蛋白质失去原有生理活性的是( )
She decided to visit Shanghai Expo for her summer vacation.
关于物体的质量,下面说法正确的是 ( )