问题 填空题

已知三角形的两边长为2,5,则第三边的长度可以是______(写出一个即可).

答案

根据三角形的三边关系,得

第三边应大于5-2=3,而小于5+2=7,

故第三边的长度3<x<7,

故答案为:在3<x<7之间的数都可.

阅读理解

In most parts of the world, many students help their school make less pollution. They join in “environment clubs”. In an environment club, people work together to make our environment clean.

Here are things students often do:

Turn off the water! Do you know that some toilets can waste twenty to

forty tons of water an hour? In a year, that would fill a small water! 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!

小题1: After mending the broken toilets, they save      .

A.a small river

B.a lot of water

C.a toilet

D.a year小题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小题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小题4:From the passage we know that students usually have lunch       .

A.at school

B.in clubs

C.at home

D.in shops小题5:The write wrote the passage to tell students to       .

A.join in clubs

B.help teachers

C.make less pollution

D.clean schools

单项选择题