抗原在机体中不可能诱导出现( )
A.免疫耐受B.超敏反应C.自身免疫性疾病D.免疫缺陷E.免疫排斥
参考答案:D
阅读理解。
My name is Li Lei. I have three good friends. They are Linda, Gina, and Frank.We like sports.My
favorite(最喜爱的) sport is ping-pong. I have three ping-pong balls. I think (认为) ping-pong is fun.
But Linda and Gina think it is boring. Their(她们的) favorite sport is baseball. .They play base ball
at school. Frank is a nice boy. His favorite sport is soccer. He plays it well.
根据短文内容 ,判断正 ( T)误 ( F) .
( )1. Li Lei has four good friends.
( )2. Linda thinks ping-pong is fun.
( )3. Frank's favorite sport is baseball.
( )4. Linda and Gina play baseball at school.
( )5. Frank plays soccer well.
患者,女,13岁,面中1/3略突,面下1/3高度正常,上颌前牙舌倾,下前牙直立,磨牙轻远中关系,上颌拥挤4mm,下颌拥挤1mm 。
治疗中不能采用 ()
A.上颌平面导板
B.上颌牙合垫
C.Ⅱ类牵引
D.摇椅弓
E.前牙水平曲