下列属于青春期的正常表现是[ ]
①脸上长出青春痘
②逃学、不愿意与同学交往
③独立意识增强
④顶撞父母和老师
A、①②
B、①④
C、②④
D、①③
答案:D
Summer holiday is coming, Li Lei with his father_____to go to Shanghai.[ ]
A. want
B. will want
C. wants
在肺源性心脏病中,提示重度肺动脉高压的X线征象是()
A.右心室重度增大
B.右心功能不全
C.肺动脉圆锥隆起
D.肺动脉干增粗
E.肺门“残根”征