由3个节点可以构造出多少种不同的二叉树
A.2
B.3
C.4
D.5
参考答案:D
解析: 由3个节点可以构造出二叉树的数目通过画图可得出共有5种。
代表因特网网站地址的简写英文是( )。
A.URL
B.ISP
C.WAN
D.LAN
句型转换。
1. Lily is going to Beijing by train .(就画线部分提问)
____________ ____________ Lily going to Beijing?
2. Kate's dress is very nice . (就画线部分提问)
____________ ____________ Kate's dress?
3. The elephant is the biggest animal on land. (就画线部分提问)
____________ ____________ the biggest animal on land?
4. I like pandas best. (就画线部分提问)
____________ ____________ do you like best?
5. Why not go by bike? (改为一个完整句)
Why ____________ ____________ go by bike?