一棵二叉树第6层(根结点为第一层)的结点最多为______个。
参考答案:32
解析: 根据二叉树性质二叉树第k层上,最多有2k-1(k≥1)个结点。
小题1:Do the umbrellas belong to those _____________(邮递员)?
小题2:I introduced Lucy to Mike and now they’re _____________(已婚的).
小题3:Is the wooden house hidden _____________trees? (在……中)
小题4:The charity walk becomes even __________ because you have to finish walking a 100-kilometre trail within 40 hours.(艰难的)
小题5:They discussed for a long time, at last they reached an ____________. (协议)
小题6:_________ (luck), he didn’t catch the last bus back home. He had to walk.
小题7:Tough the cartoon _____________ (it) was not interesting, it still attracted many kids.
小题8:None of my classmates can swim _____________ (far) than I can.
小题9:Every time you answer a question __________ (correct), you will lose a point.
小题10: Computers were one of the greatest __________ (invent) in the last century.
在语训的聋儿选配助听器,其助听器上的MIC一般选用下面哪一种()。
A.全向性麦克风
B.指向性麦克风
C.方向性单麦克
D.方向性双麦克
E.手持式麦克风