Children are to meet with setbacks as they grow up so their parents don’t have to worry a

问题补充：

Children are to meet with setbacks as they grow up, so their parents don’t have to worry about it.

A. consistent

B. arbitrary

C. fragile

D. bound

答案：

A. consistent

B. arbitrary

C. fragile

(答案→)D. bound

解析：考查固定词组。Be bound to do sth一定会做某事；A一致的；B随意的；C易碎的；根据句意说明D正确。句意：在成长的过程中，孩子一定会遇见一些挫折的，所以他们的父母亲不要太担心这样的事情。