超过保质期限的食品在任何情况下严禁销售。 ( )
参考答案：对
It is said in the book that Thomas Edison (1847—1931) ________ the world-leading inventor for sixty years.
A．would be
B．has been
C．had been
D．was
止血带一般适用于四肢大动脉的出血，下述位置正确的是（）
A.上臂上1／3
B.上臂中下1／3
C.股上1／3
D.股中段
E.E臂中段
