已知一个梯形的面积是58平方厘米，它的上底是15厘米，下底是25厘米，它的高是多少厘米?
解：58× 2(÷15+25)
=116÷ 40
=2.9(厘米)，
答：它的高是 2.9 厘米
暂无解析
在Ⅱ栏中选出与 Ⅰ栏中相应的答语。
Ⅰ Ⅱ
( ) 1. What's your telephone number, please? A. He is a worker.
( ) 2. It's very cold today, isn't it? B. It doesn't matter.
( ) 3. Can you mend it? C. Yes, wonderful, thanks.
( ) 4. How is your mother? D. Sometimes.
( ) 5. Hi, this is my friend, Lily. E. My telephone number is 6262383.
( ) 6. I'm sorry to trouble you. F. Yes, it is. You need to wear warm clothes.
( ) 7. How often do you go to the park? G. Certainly.
( ) 8. Excuse me. Where is the post office? H. Nice to meet you.
( ) 9. What does your father do? I. She is OK.
( ) 10. Did you have a good trip? J. It's about twenty meters from here.
选择恰当的关联词语填空。
居然 仍然 果然
1.他虽然有病，但( ____)不肯放下手中的工作。
2.今天早上还阳光明媚，下午( ____)下起了倾盆大雨。
3.都说张家界山水很美，暑假去游一趟，(____)名不虚传。
只有……才…… 只要……就……
4.(____)不来台风，妈妈( ____)可以收几大箩桂花。 5.桂花树开花时，
(____)仔细地在树丛里寻找，( ____)能看到那些小花。
()Look____thenicecar.
Yourfatherandyourmotherareyourp_____
He_____hamburgers
