问题
选择题
With the nuclear crisis worsening in Iran, the world’s attention is fixed again on is called the Middle East
A．which
B．that
C．it
D．what
答案
答案：D
题目分析：考察宾语从句。本题中的宾语从句what is called the Middle East作为介词on的宾语。在宾语从句中what充当的是主语。That不能再宾语从句中做主语，it不能引导宾语从句。Which是指特定范围之内的某一个。句义：随着伊朗的核危机越来越严重，全世界的注意力都集中到被称为中东的地方。故D正确。