【正确答案】 C

【答案解析】[理由] (B)even though 即使(此为副词连接词，之后须接主语和动词)
[例] Even though he is nice, I don't like him.
(他人虽然好，我却不喜欢他。)
(D)in addition 此外
in addition to… 除了……之
外尚有……
[例] The rich man owns a big house. In addition, he has three sports cars.
(那名富翁拥有1栋豪宅。此外，他还有3辆跑车。)
In addition to a big house, the rich man has three sports cars.
(除了1栋豪宅外，那个富翁还拥有3辆跑车。)
根据语意，(C)应为正选。