工程投标竞争的实质是（）竞争。
A．技术
B．价格
C．实力
D．商务
参考答案：B
Mr. Wu is one of __________ in our school.
A．a popular teacher
B．more popular teachers
C．the most popular teachers
D．most popular teachers
浮小麦的功效是
A．敛汗，益气，除热B．敛肺止汗C．敛肺止咳D．滋阴止汗E．益气，固卫，止汗
