U．S．President Barack Obama arrived in China’s economic center Shanghai on Sunday night, November 15th 2009, a state visit to China．
A. starting
B. started
C. to start
D. having stated
网友回答
(答案→)A. starting
B. started
C. to start
D. having stated
解析：考察非谓语动词。句意：在2009年12月15日星期日晚上美国总统奥巴马到达了中国的经济中心——上海，开始对中国进行国事访问。现在分词作状语表示正在进行的伴随性动作，和句子主语是主谓关系。故选A。