已知等腰三角形两边的长度分别是3和4，则它的第三条边的长度是__

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问题填空题

已知等腰三角形两边的长度分别是3和4，则它的第三条边的长度是______．

答案

①若腰长为3，则底边为4，

第三边为3．

②若腰长为4，则底边为3

第三边为4．

故答案为：3或4．

改错题

短文改错

适用：全国卷 I

短文改错（共10小题；每小题1分，满分10分）

We all know that healthy is very important to us.Both 76.______

study and work depend by strong bodies. Doing sports 77.________

and games help us keep strong and healthy. If we do not 78.________

take any exercise, we may feel tired but get sick easily. 79.________

There’re many different kinds of sports we can do them, 80.________

such as playing ball games, running, walking and swim. 81._________

However, now we have too much homework to do in 82._________

every day. We hope that we’ll be giving less homework 83.________

and have more time take part in sports. We also hope 84._______

that our school can hold a sports meeting every term. 85._________

单项选择题

价格鉴证标的购建于2009年，账面原值为7000元，当时该类资产的价格指数为95%，鉴证基准日该类资产的定基价格指数为120%，该被估资产重置成本是( )元。

A．7980

B．8842

C．10000

D．7368