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．what
D．it
答案
答案：C
题目分析：考查宾语从句。句意：随着伊朗核危机的恶化，世界的焦点再次集中到了所谓的中东地区。on是介词，后跟从句作宾语，宾语从句缺少主语，用what，故选C。