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连词和主从复合句

来源:学生作业帮 编辑:神马作文网作业帮 分类:英语作业 时间:2024/11/18 21:19:58
_______mathematics is the base of all other sciences. A This is because B This is that C It is that D Because 为什么不能选B?(答案是A)
连词和主从复合句
解题思路:
解题过程:
选项B不能选,因为意思表达不完整.
最终答案:略