(单选题)

By “held back” the writer means “______”.

A.made to remain in the same classed

B.force to study in the lower classed

C.drawn to their studies

D.prevented from advancing

参考答案：D

参考解析：

词义猜测题。hold back本意为“隐瞒；控制；阻碍；犹豫不决”，根据文章第一句话和第二句话可以看出此处hold back 意取“阻止”，prevent from 正合此意。“mixed-ability teaching”对于聪明孩子并未阻止，也就是说“mixed-ability teaching”对于聪明孩子的发展并未阻止，故选D。

知识点：阅读理解四选一英语专业基础知识阅读理解教师招聘-小学英语