【单选题】______ around the cultural relics for almost an hour, we got together under a big tree for a short break.
【单选题】下列关于生态农业的叙述,错误的是 [ ]
C.
生态农业属于过度开采、消耗自然资源的生态系统
【单选题】The cultural relics are displayed in chronological ______.
【简答题】From the cultural relics nearby, it is easy to d_____ ( 推断;推理 ) that there are rare treasures hidden inside the tomb.
【简答题】任务 2 :编程题 使用循环和循环的嵌套,根据用户输入的行数打印下列图形 3 *** ** * 5 ***** **** *** ** *
【单选题】Which of the following about viruses is false?
A.
Over 2,000 computer viruses are found to be data destructive now.
B.
There are 11,000 types of computer known viruses today.
C.
A virus may paralyze an entire network in several hours.
D.
Usually it takes 10 to 20 minutes for a virus to spread from one workstation to another far away.