信息系统的评价不仅仅考察系统的现在，也将为以后的系统（）和（）提出意见。
参考答案：改进，扩展
You really shouldn’t have _____ to his comment on your work so violently. ______ he meant no harm to you.
A．reacted; After all
B．responded; At all
C．acted; After all
D．done; In all
汇编语言是（）。
A.机器语言
B.低级语言
C.高级语言
D.自然语言
