胰岛素瘤( )
A．血清AFP升高B．血清胰岛素升高C．血清促胃液素(胃泌素)升高D．血糖升高E．血清淀粉酶升高
参考答案：B
—What about the student in your class, Mr. Wang?
—The doctor said that sleep caused him poor memory and poor concentration.
A．lacking of
B．lacked in
C．lacking
D．lack for
柏林墙
