倒位杂合体倒位圈内连锁基因的重组率下降，是倒位抑制了交换的发生。
参考答案：错
从方框中选择合适的句子补全对话，其中有两项是多余的。
A: What do you usually do on weekends?
B: 1. _______
A: Do your parents often go to the movies with you?
B: My father likes going to the movies with me. But my mother doesn't.
A: 2. _______
B: She likes shopping.
A: 3. _______
B: Food and books.
A: 4. _______
B: Once a week.
A: 5. _______
B: Yes, she often reads before she goes to bed.
多数医生认为治疗癫痫持续状态应静脉给予大剂量的苯二氮类药物，原因是（）
A.一次注射后其控制癫痫活动的效果可长达24小时
B.没有呼吸抑制作用
C.静脉给药后起效很快
D.没有致低血压作用
E.其代谢和清除不依赖肝脏
类药物，原因是（）