30.Many youth went to the Shanghai Science and Technology Museum on Nov. 16, 2009, U.S. President Barack Obama delivered a speech during his four-day state visit. A.which B.in that C.where D.that 【查看更多】
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Many youth went to the Shanghai Science and Technology Museum on Nov. 16, 2009, _____ U.S. President Barack obama delivered a speech during his four-day state visit.