1938年春,李宗仁 * * 指挥中国军队与日本军血战近20天,取得抗战以来正面战场的最大胜利,这次战役是:[ ]
A.淞沪会战
B.平型关大捷
C.台儿庄战役
D.百团大战
答案:C
—Where's Tina?
— She to the library. [ ]
A. goes
B. had gone
C. has gone
D. would go
在深度为5的满二叉树中,叶子结点的个数为( )。
A.32
B.31
C.16
D.15