有关PrP的描述错误的是______
A．可致海绵状脑病B．有两种异构体C．含有核酸D．需要特殊消毒才能灭活E．以上均不是
参考答案：C
A new supermarket __________ in my hometown last month.[ ]
A. built
B. has built
C. was built
D. is building
肝胃不和型恶阻的特征是（）
A.口中泛酸
B.呕吐痰涎
C.呕吐酸腐
D.呕吐酸水或苦水
E.呕吐清涎
