下列乙类传染病中哪一种是要求按甲类传染病进行管理（）
A.狂犬病
B.肺结核
C.传染性非典型肺炎
D.流行性乙型脑炎
E.猩红热
参考答案：C
In the past 5 years a great deal of money _____ improving the environment of the school.
A．is spent
B．has been spent
C．was spent
D．had been spent
肠套叠钡灌肠检查时与空气灌肠时典型表现是什么？
