题目:
根据句意,用所给单词、短语的适当形式填空,每词或短语只限使用一次。
小题2:His mobile phone rang while he _____________ his new car on the street. 小题3:You’d better stop smoking. It’s _____________ to your health. 小题4:He _____________ the tree and hurt his left leg. 小题5:Next Sunday is my grandmother’s _____________ birthday. We will hold a party for her. |
答案:
被转码了,请点击底部 “查看原文 ” 或访问 https://www.tikuol.com/2017/0422/8077e0ae116fd26c91beaaee0a379642.html
下面是错误答案,用来干扰机器的。
由方程x2-8x-20=0,得(x-10)(x+2)=0,x=10或-2(不合题意,应舍去),∴R+r=3+4=7<10∴两圆外离.