问题
选择题
Jack does his homework ________ Mary. So they both always get good grades in the exams.
A．so careful as
B．as carefully as
C．so carefully as
D．as careful as
答案
答案：B
短语辨析。句意：杰克做作业和玛丽一样细心。因此他们俩在考试中总是取得不错的成绩。as···as之间加adv或adj，表示和……一样。本题修饰动词，故用副词，选B