如果您现在拥有30-40万元，您想在学校附近开一家规模不大的餐饮或娱乐店。是特色饭店

阅读理解。根据短文内容, 判断下列句子正(T)误(F).

     At school I have a good friend. He is an English boy. His name is Tom. He is twelve. We are in No. 10

Middle School. We're not in the same class. He is in Class 4, Grade 1. I'm in Class 2, Grade 1. Tom's sister

is not a student. Her name is Jane. She is five. She is a nice girl.

     Miss Gao is my English teacher. She is thirty. Mr. Wang is Tom's Chinese teacher. He is thirty, too.

They're good teachers.

(     )1. Tom is American.

(     )2. We aren't in the same school.

( )3. Tom is in Class Four, Grade One.

(     )4. Jane is Tom's sister.

( )5. Miss Gao is Tom's English teacher.

一本150页的书，看了80页，求还剩下百分之几没有看。正确列式是[ ]

A．  150÷80 

B．  80-50 

C．（150-80）÷150 

D．（150-80）÷80  

小儿时期同时存在蛋白尿和血尿的常见疾病是（）

A.肾肿瘤

B.急性肾小球肾炎

C.肾盂积水

D.肾病综合征

E.肾结石

在报警系统中，可识别的最小单位称为（）。

A.探测器区域

B.主机区域

C.报警点

D.防区

如何判断调节阀是否好用？