————.the website of www．google．, and you will learn a lot about Obama’s first official visit to China．
A. Searching
B. To search
C. Having searched
D. Search
网友回答
A. Searching
B. To search
C. Having searched
(答案→)D. Search
解析：本题的含义是在网上搜索，你将会对奥巴马首次到中国的来访有所了解，本题的前半句为祈使句，用动词原形，故本题选D。