More and more people today ()
A. are trying activities such as bungee jumping
B. are climbing the highest mountains
C. are coming chose to death in sports
D. are looking for adventures such as exploring unknown
40()
A. able
B. unable
C. going
D. about
肺炎的临床表现不包括
A. 发热
B. 咳嗽
C. 气促
D. 呼吸困难
E. 肺部可变的湿啰音
下列不属于第二代计算机特点的一项是( )。
A. 采用电子管作为逻辑元件
B. 内存主要采用磁芯
C. 运算速度为每秒几万至几十万条指令
D. 外存储器主要采用磁盘和磁带