问题
选择题
----_____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
答案
答案：B
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。