经济适用住房管理办法》规定，房地产开发企业实施的经济适用住房项目利润率按不高于（）核定。
A.1%
B.2%
C.3%
D.4%
参考答案：C
It is important that she _______ with Mr. Williams immediately. [ ]
A. speak
B. spoke
C. will speak
D. to speak
A．麦芽糖浓度太浓
B．加热时间不够
C．CuSO4溶液量不够
D．NaOH溶液量不够
