(2013·青岛一模)Scientists are still wondering the Egyptians built the pyramids so long ago.
A. how it is that
B. how is it that
C. it is how that
D. that how it is
网友回答
(答案→)A. how it is that
B. how is it that
C. it is how that
D. that how it is
解析：选A 考查强调句型。分析句子结构可知，wondering后为宾语从句，宾语从句中含有一个强调句的特殊疑问句。由于宾语从句要用陈述语序，故选A。