建设工程施工合同的文件组成包括( )。 A．中标通知书 B．投标书 C．工程量清单

He often helps his classmates         their English.  [ ]

A. to      

B. with    

C. on    

D. in

根据地形类型图，填写地表起伏状况及相应高度：

Which statement about the preliminary design stage of a software development project is true?（）.

A.The preliminary design is an internal document used only by programmers

B.The preliminary design is the result of mapping product requirements into software and hardware functions

C.The preliminary design of the product comes from the requirement specification

D.The developers produce the preliminary design by defining the software structure in enough detail to permit coding

新课程强调在教学中培养学生正确的态度就是使学生（）。

A.尊重老师、同学

B.正确对待知识、学习、他人和社会

C.正确对待学习和考试

D.养成好的学习习惯

历史上，最早的方阵是古（）