搜题请搜索小程序“爱下问搜题”
问题 选择题
During ______ the river, he didn't eat anything.

A. crossing
B. cross
C. across
D. acrossing
答案

答案：A

句型转换

根据题后要求完成句子。

1. There is a post office near here. (变否定句)

  ________  _______ a post office near here.

2. The bank is across from the park. (对划线部分提问)

_________ is across from the park?

3. The hotel is on Center Street. (对划线部分提问)

_________  the hotel? 

4. There are some people in the park. (一般疑问句并作肯定回答)

   _______ there ______ people in the park?

  Yes, ______  _______ .

5. go, and, right, straight, turn, just, (连成句子)

________________________________________.
查看答案
问答题

已知有6个顶点(顶点编号为0～5)的有向带权图G，其邻接矩阵4为上三角阵，按行为主序(行优先)保存在下面的一维数组中：
要求：


画出有向带权图；
查看答案