已知圆x2+y2﹣2x﹣3=0的圆心坐标及半径分别为

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已知圆x²+y²﹣2x﹣3=0的圆心坐标及半径分别为（）

A：（﹣1，0）与 $\sqrt{3}$

B：（1，0）与 $\sqrt{3}$

C：（1，0）与2

D：（﹣1，0）与2

上一题下一题 0.0难度选择题更新时间:2019-07-13 02:30:43

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C

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根据短文内容，完成下面的任务。

Dear Grandma,

How are you? I am very busy this month. (A)September 5th is my good friend Gina's birthday. I will go to her birthday party in the evening. On the eleventh, (B)我有一个英语测试. On September 17th, I have a baseball game. You know I love baseball. On the 24th, I have a school trip. On the 28th, I'll go to Mr. Cool's Clothes Store. The clothes there are on sale that day. I want to buy a pair of sports shoes and a T-shirt. The hats there are very nice. I will buy one ① ________ you. Oh, Grandma, I'm very sorry I can't go to see you ② ________ my parents this month. See you next month.

Yours,

Eric

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