题目内容
What is the passage mainly about？
查看答案
搜索结果不匹配？点我反馈
更多问题
—I regret ______ you John has been fired. —I can hardly believe my ears. He's such a fine
I'm certain David's told you his business troubles. ______ , it's no secret that he owes a
—Did Jack come back early last night？ —Yes. It was not yet eight o'clock ______ he arrived
设向量β可由向量组α1，α2，…，αm线性表示，但不能由向量组(I)α1，α2，…，αm－1线性表示，记向量组(Ⅱ)α1，α2，…，αm－1，β，则()．
微信支付 
支付宝支付