药物的安全指数是指
A.ED50/LD50
B.LD5/ED95
C.ED5/L D95
D.LD50/ED50
E.LD95/ED5
A.ED50/LD50
B.LD5/ED95
C.ED5/L D95
D.LD50/ED50
E.LD95/ED5
第2题
It can be inferred from the passage that when the author was a child, he ______
A.liked the foods he had
B.got a lot of pocket money
C.was spoiled by his parents
D.was scolded if he misbehaved
第3题
A.Tim is glad that he can stay up late.
B.Every child in Brown's family must help with the housework.
C.Mr. and Mrs. Brown do not have to do any housework.
D.The constitution was agreed to by every child of the family.
第4题
A good reading habit Can help your child do well at school.
A Right
B Wrong
C Not mentioned
第5题
What can a life insurance do to a child?
A.It can provide protection for their health.
B.It offers money on the funeral without delay.
C.It supports the dally life of other family members.
D.It compensates for the parents' care for the child.
第6题
What can parents do to help their children get a job?
A.To encourage them to be confident.
B.To support them financially.
C.To urge them to be dependent.
D.To keep an eye on their emotions.
第7题
Why do Americans love time?
A.They think time can bring money and a lot of things.
B.They hope they can live longer.
C.They don't need to work very hard.
第8题
A.meditation
B.mediate
C.mediator
D.rebellion
第9题
A child has his pains because______.
A.he can not do whatever he wants to
B.he is not allowed to play in rain
C.he has a lot of new things to learn
D.he can not play at the seaside freely
第10题
In the author's opinion, who should do a lot of listening?
A.The book writers
B.The researchers
C.The parents
D.The child
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