一绝热容器内封闭着一些气体，容器在高速运输途中突然停下来，则_爱下问搜题

搜题请搜索小程序“爱下问搜题”

问题不定项选择

一绝热容器内封闭着一些气体，容器在高速运输途中突然停下来，则 [ ]

A．因气体温度与机械运动速度无关，故容器内气体温度不变

B．因容器是绝热的，故容器中气体内能不变

C．因容器突然停止运动，气体分子运动速度亦随之减小，故容器中气体温度降低

D．容器停止运动时，因分子和容器壁的碰撞，机械运动的动能转化为分子热运动的动能，故容器中气体温度将升高

答案

答案：D

完形填空

完形填空。

     My first day at school was unforgettable (难忘的). I was so    1 that I didn't sleep well the night
before.
     My mother   2   me to school on the first day.   A teacher came and led me and other children to the
classrooms. Some children began to cry because their   3   couldn't go into the classrooms with them. I
didn't cry,   4   I had been to a kindergarten (幼儿园) before. My mother   5   a moment later.
     When I   6   the classroom, one of my classmates came to talk to me. It was a happy
       7   for me to get to know my new classmates. We laughed and played   8   . Once in a while the
teacher had to     9 us to keep quiet as we were making too much noise.
     Finally the bell rang for us to go home. I was glad to see my mother   10   for me at the school gate. It
was a wonderful first day at school.

( )1.   A. sad
( )2.   A. introduced
( )3. A. parents
( )4.   A. so
( )5. A. had lessons
( )6.   A. left
( )7.   A. game
( )8.   A. quietly
( )9. A. want
( )10. A. asking

B. excited
B. invited
B. teachers
B. and
B. went to school
B. cleaned
B. time
B. slowly
B. tell
B. waiting

C. quiet
C. wished
C. children
C. because
C. went home
C. entered
C. interest
C. quickly
C. help
C. standing

D. bored
D. took
D. pupils
D. also
D. left home
D. visited
D. subject
D. happily
D. join
D. buying

单项选择题

诊断明确的肾综合征出血热的病人，其发热期尿的常规检查中特征性的变化是

A．大量白细胞
B．大量盐类
C．大量管型
D．大量蛋白
E．大量凝血块