在Java中，负责对字节代码解释执行的是( )。
A．垃圾回收器
B．虚拟机
C．编译器
D．多线程机制
参考答案：B
—Sorry, sir! Could you give me another chance?
—It's impossible. You've made the same mistake again and again.
You _____ to be punished. [ ]
A. used
B. are able
C. deserve
D. are worth
方程(a-1)x=3(x+1)的解是x=-3，则a=（ ）。
