李老师骑自行车上班，每分钟能行180米，他从家到学校要用40分钟．李老师家离学校有多远？
180×40=7200（米）；
答：李老师家离学校有7200米．
So little ______that the neighbor could not settle their difference. [ ]
A. they agreed
B. they did agree
C. agreed they
D. did they agree
如下哪个是Java中的标识符______
A．public B．super C．3number D．width
