“Lucy”少女生活在距今约300万年前，它不可能具有的本领是[ ] A．地下生

读短文，选择答案。

     I had a bad day today. I went to the bookstore in the morning. I read a story book and it was very

interesting. Then I wanted to have some food. I went to a supermarket then, but I couldn't find my

wallet (钱包). So I went back to the bookstore and looked for my wallet. A man said he saw a wallet

on the floor, and a man took it away. I lost my wallet and I was very sad.     

1. I wanted to          in the supermarket.              

A. read a storybook         

B. buy some food

2.          saw the wallet.                     

A. A man            

B. A cleaner

3. I lost my wallet in the _       .               

A. bookstore                  

B. supermarket

4. I feel          today.            

A. happy                      

B. sad

为什么不宜使用铜器加热或煮牛奶？

（）是多普勒雷达测定目标速度的理论基础，它是由物理学家多普勒于1842年首先在声学上发现的。

某桩基承台，采用混凝土预制桩，承台尺寸及桩位如图(a)所示。桩顶标高为-3.640m，桩长16.5m，桩径600mm，桩端进入持力层中砂1.50m。土层参数见图(b)所示，地下水位标高为-3.310m。查表时，η_c取低值。

提示：按《建筑桩基技术规范》(JGJ94—2008)计算。

若桩选用钢管桩，其隔板n=2，试问，单根钢管桩竖向承载力特征值（kN），与下列何项数值最为接近（）.

A．1000

B．1010

C．1030

D．1060

投保人对保险标的不具有保险利益的保险合同属于（）。

A.约定无效合同

B.全部无效合同

C.部分无效合同

D.条件失效合同