选择题：39. The website allows people to ______ us directl

题目内容：

39. The website allows people to ______ us directly about our programs.(本题2.0分)
A、 contact at
B、 contact with
C、 contact
D、 contact to

参考答案：

5. “物以稀为贵”的现象反映的是( )(本题3.5分) A、商品稀少价值大 B、使用价值决定价

5. “物以稀为贵”的现象反映的是( )(本题3.5分) A、商品稀少价值大 B、使用价值决定价值 C、供求关系对价格的影响 D、心理因素决定价值

What is the main contribution to the latest problem according to Cathy?选择一项：A.To

You have a lot of good ideas and you start quite a few different projects, but _

Every organization should have only one 回答 plan, one set of overriding goals.

40. 风机的全压是指（）(本题2.0分) A、出口风压 B、入口风压 C、风机的动压和静压之和