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
网友回答
A. which
B. that
(答案→)C. what
D. it
解析：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。