下列说法中，正确的是 [ ] A．正数和负数统称为有理数 B．自然数就是正整数

根据短文内容和所给的首字母，写出短文中所缺的单词，使短文完整，合乎情景。将完整的单词写在下面横线上。

    The mobile phone is a useful thing, but maybe I don't know h  1   to use it. Sometimes it makes things

difficult for me.

    One day I wanted to see my friend nearby. I could a  2   at his house in five minutes, but I looked at my

mobile phone and thought i  3   would be better to ring him up. I r  4   him for the first time, but the line was

busy. Five minutes later, there was an answer, but it was the wrong number. Then I tried a  5   and this time I

got an answer from him.

    I asked him if he was at home in the afternoon. And he said-at 1  6   I thought he said-he would be at home

all afternoon. So I went to his house, but then I found n  7   in. I called him for the fourth time. This time I got

so angry that I s  8  , "You are not at home? But you just told me over the telephone that you would be at home

all afternoon!"

    Here w  9   his answer, "No, I said: 'I will NOT be at home all afternoon.'"

    I went back to my room, sat down in front of the mobile phone and looked at it. What e 10   could I do?

Nothing!

1.                 2.                 3.                 4.                 5.                

6.                 7.                 8.                 9.                10.             

如图所示，闭合线框的质量可忽略不计，将它从图示位置匀速拉出匀强磁场，若第一次用0.3 s时间拉出，通过导线截面的电荷量为q₁，第二次用0.9 s时间拉出，通过导线截面的电荷量为q₂，则q₁：q₂=____。

[复合型非选择题]男性，68岁。轻度口干、多饮3个月，4天前因头晕、恶心、食欲不振进行输液治疗，每日约输5%葡萄糖液1000ml，患者逐渐出现嗜睡，1小时前抽搐后昏迷，查体：血压80/60mmHg，皮肤弹性差，病理征（-），血糖35mmol／L，血钠156mmol／L，尿酮体（+）。

该患者的诊断是（）

A.糖尿病酮症酸中毒

B.脑血管意外

C.高渗性非酮症性糖尿病昏迷

D.糖尿病酮症

E.脑水肿

“交钥匙”承包方式又称为（）。

A.招投标承包

B.联合承包

C.单项承包

D.一揽子承包

位于CPU和主存DRAM之间、容量较小但速度很快的存储器称为　【 】　。