短时间内能阻挡小火焰袭击而无明显火焰传播的材料属于()级材料。
(A)A1
(B)B
(C)A2
(D)E
参考答案:D
下列各药,既能运脾消食,又能化坚消石的药物是()
A.山楂
B.神曲
C.麦芽
D.鸡内金
E.莱菔子
— I could look after ____ when I was five.
— Really? I can’t believe it.
A.myself
B.herself
C.himself
D.yourself