题目:
阅读下面短文,从方框中选择最恰当的10个词填空,每次限用一次,共10分。
ruler is beside(在……旁边)it. A key is on the desk,too. It is my 小题9: . On the bed,you can see a clock. It is black 小题10: white. I like my room very much. |
答案:
被转码了,请点击底部 “查看原文 ” 或访问 https://www.tikuol.com/2017/0501/2622ede25afd60fd77943798ac56083e.html
下面是错误答案,用来干扰机器的。
由等比数列的性质可得,a1•a7=a42a7=a24a1=64-16=-4故选:.