从决策的基本含义来说，它是指（）
A.确定“应该达成的既定目标”
B.设计“可利用的代替方案”
C.在几种行为方案中作出选择
D.以上都对
参考答案：D
I don't think highly of this kind of flower - ________, I don't care for it.[ ]
A. in other words
B. all in all
C. after all
D. in the meanwhile
蛋白质合成后经化学修饰的氨基酸是
A．半胱氨酸B．羟脯氨酸C．甲硫(蛋)氨酸D．丝氨酸E．酪氨酸
