题目

已知G是的重心，若A、B、C的坐标分别为、、，则点G的坐标为________. 答案：【答案】【解析】利用重心坐标公式即可求解.G是的重心 故答案为： Last year my English class was difficult for me. First of all, it wasn't  1  for me to understand the teacher when she talked to the class. To begin with, she  2  too quickly, and 1 couldn't understand every word. Later an. I realized that  3   doesn't matter if you don't understand every word. Also I was afraid to speak in class,   4   I though! my classmates might laugh at me. I couldn't always make complete (完整的) sentences, 5 . Then I started to watch English - language TV. It  6   me a lot I think that doing lots of listening  practice is one of the  7  of becoming a good language learner. Another thing that I  8 very difficult was English grammar (语法). So I decided to  take lots of grammar notes  9  every class. Then I started to write my own original (原来的) sentences using the grammar i was learning. It's amazing  10  this helped. Now I am enjoying learning English and I got  an A this term. My teacher is very pleased.   1. A. interested    B. confident       C. easy        D. difficult   2. A. spoke         B. told            C. said        D. thought   3. A. that          B. what            C. it          D. this   4. A. so            B. but             C. though      D. because   5. A. neither       B. either          C. too         D. also   6. A gave           B. encouraged      C. helped      D. knew   7. A. secret        B. secrets         C. stories     D. story   8. A. looked for    B. found out       C. searched    D. found   9. A. on            B. to              C. at          D. in   10. A. how much     B. how many        C. how big     D. how important