单选题 Obviously these people can be relied on in a crisis.
【正确答案】 B
【答案解析】[解析] 划线部分为短语动词,意思是“依赖,信赖”,可被B项替换,意思是“依靠,依赖;信任”,例:You can't depend on your parents forever.你不能永远依赖你的父母。A项意为“以……为食,靠……为生;继续活着”,例:Most of Asians live on rice.多数亚洲人以大米为主食。C项意为“相信,信任”,例:I don't believe in ghosts,do you?我不相信有鬼,你呢?D项意为“参加,加入”,例:They danced and danced until a lot of us joined in.他们不停地跳着舞,直到我们中间许多人都参加了进去。