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问题 计算题
估算。
(1)721÷80≈(2)839 ÷9≈(3)902 ÷90≈
(4)62×19≈(5)187×11≈(6)418÷61≈
答案

(1)9, (2)84, (3)10 ,(4)1200, (5)1900, (6)7 

选择题
设a=
3
-
2
，b=
6
-
5
，c=
7
-
6
，则a，b，c的大小顺序是（　　）
A．a＞b＞cB．b＞c＞aC．c＞a＞bD．a＞c＞b
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选择题

After the storm in Beijing, people were suffering in that area, ________ urgently needed clean water, medicine and shelter to survive.

A．which

B．who

C．where

D．what
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