《国务院关于进一步加强安全生产工作的决定》要求强化安全生产监管监察行政执法，对严重忽

阅读理解。

    In most parts of the world, many students help their school make less pollution. They join in

"environment (环境) clubs". In an environment club, people work together to make our environment clean.

    Here are the things students often do.

    Turn off the water! Do you know that some toilets can waste (浪费) twenty to forty tons of water an

hour?

    In a year, that would fill a small river! In environment clubs, students mend those broken toilets.

    No-car day. On a no-car day, nobody comes to school in a car-not the students and not the teachers!

Cars give pollution to our air, so remember:

    Walk, jump, bike or run.

    Use your legs! It's lots of fun!

    No-garbage (垃圾) lunches. How much do you throw away after lunch? Environment clubs ask students

to bring their lunches in bags that can be used again. Every week they will choose the classes that make the

least garbage and report them to the whole school!

    We love our environment. Let's work together to make it clean!

1. After mending the broken toilets, they save            . [ ]

A. a small river

B. a lot of water

C. a toilet

D. a year

2. On a no-car day,             will take a car to school. [ ]

A. only students

B. only teachers

C. both students and teachers

D. neither students nor teachers

3. Environment clubs ask students            . [ ]

A. to run to school every day

B. to play sports every day

C. not to throw away lunch bags

D. not to forget to take cars

4. From this passage we know the students usually have lunch            . [ ]

A. at school

B. in clubs

C. at home

D. in shops

5. The writer wrote the passage to tell students to            . [ ]

A. join in clubs

B. help teachers

C. make less pollution

D. clean schools

在研究和学习物理学的过程中方法是不可缺少的。比值法是对与多个因素有密切关系的某个物理量进行测量的思想和方法.我们学习过的速度和密度概念都是通过比值法建立起来的.下列物理量也是用这种方法建立起来的有[ ]

A．热值

B．功率

C．功

D．比热容

放在水平地面上的一物块，受到方向不变的水平推力F的作用，力F的大小与时间t的关系和物块速度v与时间t的部分关系如图所示，重力加速度g=10m/s²，求：

（1）物块在运动过程中受到的滑动摩擦力大小；

（2）物块在第3s到6s内的加速度大小；

（3）物块质量是多少；

（4）外力F为零的第9s到第11s内物体位移大小。

压力容器发生鼓包变形会使该区域材料发生大量塑性变形、壁厚减薄承载能力（）

A、没有显著降低

B、提高

C、降低

D、不确定

“藏于金兰之室”中“金兰之室”指（）；“时于先生郭子斋堂”中“斋堂”指（）。