动脉粥样硬化性肾萎缩
A．蚤咬肾B．大白肾C．颗粒性固缩肾D．肾脏多数凹陷瘢痕
参考答案：D
.-----I heard that many westerners prefer vegetables to meat.
-----It is true. Americans eat ___ vegetables each person today as they did 20 years ago.
A．more than twice
B．as twice as many
C．twice as many
D．that twice as many
从Windows环境进入MS―DOS方式后，返回Windows环境的DOS命令为（ ）。
A．EXIT
B．QUIT
C．RET
D．MSDOS
