中国自20世纪60年代开始进行海洋油气资源的自营勘探和开发。()
“Thedignityofmovementofanicebergisduetoonlyone-eighthofitbeingabovewater.”This“iceberg”analogyaboutprosestylewasputforwardby().
—Davidhasmadegreatprogressrecently.—_______,and_______.
“MylastDuchess”isapoemthatbestexemplifiesRobertBrowning’s().