糖皮质激素对水痘病程有不利影响,可导致病毒播散,一般不宜应用。()
参考答案:对
任何一个三角形,至少有( )
A.一个锐角
B.一个钝角
C.一个直角
D.两个锐角
The teacher asked Mary _______ she could tell him the general idea of the poem. [ ]
A. that if
B. whether
C. that
D. how