---- has been designed to enable children and young people to act safely on roads?
----Programmes and resources in the theme “Road Safety”.
A. Why is it that
B. What is it that
C. What is that
D. Is it what
网友回答
A. Why is it that
(答案→)B. What is it that
C. What is that
D. Is it what
解析：考查强调句型。It is...that是强调句型，强调句型有一般疑问和特殊疑问形式。句意“已经设计了什么来使孩子和年轻人能够在马上安全玩耍？”“以‘马路安全’为主题的节目。”句子缺少主语，用what。故选B。