问题 解答题

一副三角板由一个等腰直角三角形和一个含30°角的直角三角形组成,利用这副三角板构成一个15°角的方法很多,请你按下列要求画图,并回答问题.

(1)画一个15°的角和一个105°的角;

(2)利用我们常用的画图工具,你有哪些方法检验你所画的两个角的准确性?

答案

解:(1)已知一副三角板由一个等腰直角三角形和一个含30°角的直角三角形组成,

即有45°角,30°角,60°角,

45°﹣30°=15°, 60°+45°=105°,

画图如:

(2)可用量角器检验所画的两个角的准确性。

阅读理解

阅读理解

       When people take a vacation, can they always enjoy it?

       The fact is that some people who travel for pleasure get no pleasure from it at all. Others, who travel

because they must travel, have a lot of fun doing it. What makes one trip more enjoyable than another?

       Any trip can be enjoyable if you plan it well. Every minute that you spend in planning your trip may

save your ten minutes of trouble during your trip. It may also add an hour of pleasure!

       Many resorts and cities around the world are popular during some months of the year and less

popular during other months. Find out if the places you are visiting have an "in" season and an"off" season. This may 'help you to decide when you want to go. The weather may help to find out them before you go.

根据短文内容,回答下列问题。

1. Do all people have fun taking a vacation?

                                                                                                        

2. Do we need to make a good plan before we take a vacation?

                                                                                                       

3. Are the resorts popular all the year round?

                                                                                                       

4. Is it a good idea to go to beaches in an "off"season?

                                                                                                       

5. How can you make your trip more enjoyable?

                                                                                                       

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