腹部超声特定断面扫查时可遇到棱镜伪像，如肠系膜上动脉或宫内胎囊出现重复图像，下列哪个

       everyone thinks there isn't going to be an English exam tomorrow , because

the teacher has caught a bad cold.[ ]

A. About  

B. Each    

C. Only   

D. Nearly

Some of the exercises appear to be ____ ones that you have done, but after taking ____ second look, you will

find that they are different. [ ]

A. /, the

B. the, the

C. the, a

D. /, a

百分位

某中学生读了漫画后得出以下认识，你认为不正确的是

A．大跃进运动

B．受苏联社会主义建设模式的影响

C．表明当时经济建设追求高速度

D．一五计划全面展开

下列哪一项不是免疫程序的内容。（）

A.初种（初服）起始月龄

B.生物制品的种类及预防的病种

C.接种生物制品的间隔时间

D.加强免疫时间

E.加强免疫的年龄范围