题目

两个完全一样的三角形可以拼成一个（________）形，如果一个三角形的底是4m，高是6m，那么拼成图形的面积是（________）m2。 答案：【答案】平行四边形 24 【解析】两个完全一样的三角形可以拼成一个平行四边形，如图：；拼成的平行四边形面积是三角形面积的2倍，由此解答即可。两个完全一样的三角形可以拼成一个平行四边形；4×6÷2×2＝12×2＝24（平方米） (阅读理解) Look! This is our school. It is very nice. Many trees and flowers are in our school garden. Our school is small. There are fifteen classes in our school. There are fifty students in every class. We have forty teachers and one headmaster（校长）. The headmaster is Li Ming. In class, we listen to（听） our teachers. We study hard（努力学习）. After class, we often play basketball or volleyball. Our school life is very nice. We like our school, our headmaster, our teachers and our class.(1) Our school is ______. A. not small　　 B. big　　 C. too big　　 D. small [　　] (2) We have ______ teachers and ______ headmaster. A. fifty; one　　 B. fourteen; one 　　C. forty; a　　 D. fifty-four; a [　　] (3) There are ______ students in our school. A. 600　　 B. 750　　 C. 500　　 D. 400 [　　] (4) ______ is the headmaster. A. Li Ming　　 B. Mr Liu　　 C. Liu Ming　　 D. Li Ning [　　] (5) After class, the students often ______. A. play basketball　　　　 B. play volleyball　　 C. study　　　　 D. A and B [　　]