剑7里第一篇大作文有一段话的语法问题:the child would not learn how to exploit

剑7里第一篇大作文有一段话的语法问题:the child would not learn how to exploit and development their
As with all questions of nature versus nurtrue,they are not mutually exclusive .
Without talents the continuous training would be neither attractive nor productive,and without the training the child would not learn how to exploit and development their talent.
the child would not learn how to exploit and development their talent.
the child 虽然可以表示一类事物,但是为什么这么使用.而不是使用the children.我用的话肯定是the children.他剑桥原文这么用有什么好处?
最后问什么是talent不是talents?
本是新手，分不多。就这些分了。希望各位大侠不吝赐教吧。