下列方法中，不属于费用偏差分析的方法为（）。
A.横道图法
B.模拟法
C.表格法
D.曲线法
参考答案：D
Some of the doctors are paid almost ______ as the nurses.
A．twice as much
B．much as twice
C．as much twice
D．as twice much
在体内经代谢转变可生成牛磺酸的氨基酸是
A．TyrB．HisC．CysD．GluE．Thr
