提出“杂取种种人，合成一个”典型化方法的作家是（）
A.曹雪芹
B.鲁迅
C.郭沫若
D.茅盾
参考答案：B
Zhanglin was lost in computer games during his last year in high school, otherwise he _____ a student at Beijing University.
A．would have been
B．can be
C．has been
D．had been
无符号二进制整数10000001转换成十进制数是______。
A．119 B．121 C．127 D．129
