搜题请搜索小程序“爱下问搜题”
问题 解答题

甲、乙两位同学在学校环形跑道上跑步，两人在同一地点往相反方向绕跑道跑，甲每分跑52米，乙每分跑48米，4分后两人相遇，学校环形跑道长多少米？

答案

（52+48）×4= 400（米）

填空题

用所给词的适当形式填空。

1.  Which is the ________(far)  from Zhengzhou,  Beijing, Shanghai or Sonya?

2.  Taiwan is in the________ (south) part of China.

3.  Which is________ (popular), pop songs or classical songs?

4.  People there are________ (friend) to visitors.

5.  He left the town without________ (say) goodbye to anyone.

6.  Spring is the most ________ (love) season of a year.

7.  The price of this computer is the________ (high) of the three.

8.  Bill Gates won a great________ (successful).

9.  It's not easy_________(learn) English well.

10.  My sister wants to be a________ (act) when she grows up.
查看答案
单项选择题

管路系统的特性曲线是随着（）的增加而上升。

A、流量

B、扬程

C、轴功率

D、效率
查看答案