钡餐检查，空肠黏膜皱襞多呈（）
A.弹簧状
B.腊肠状
C.羽毛状
D.雪花状
E.鱼骨状
参考答案：A
It is only when an NBA player has aged and been through many battles ______ he learns an important lesson: there is no “I” in “team”.
A．after
B．before
C．what
D．that
—What does the notice on the wall say?
—“No person take books out of the reading room; otherwise he would be fined.”
A．will
B．may
C．shall
D．must
