破折号后面是要跟句子吗？为什么要加that

@唐瑭老师 请问为什么选B而不是A？我一直在A和B之间犹豫 排除B是因为：Martin's exclusion 只说明M并没有把气候变化包含进去（exclude），不代表deny了。我认为deny程度太重，因此排除。且A看起来符合逻辑：第一个理论就是说P狩猎导致物种灭绝。

a construction company was paid a total of 500000 for a construction project. the company's only costs for the project were for labor and materials. was the company's profit for the project greater than 150000? (1) the company's total cost was three times its cost for materials (2) the company's profit was greater than its cost for labor answer is C