海运是（）最主要的运输方式。
A.海洋
B.货物
C.国际贸易
D.集装箱货物
参考答案：C
科学家研究发现用“汽水”浇灌植物能促进植物生长，原因是“汽水”能加强______．
Liu Xiang ________ his experience during the World Track and Field Events when being
interviewed by Reuters.[ ]
A. spoke to
B. referred to
C. contributed to
D. talked to
