问题
填空题
点M（8，-10）按向量
|
答案
∵点M（8，-10）按向量
平移后的对应点M'的坐标是（-7，4），a
∴
是一个以M为起点，M′为终点的向量，a
∴
=（-7-8，4+10）=（-15，14）a
故答案为：（-15，14）
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点M（8，-10）按向量
|
∵点M（8，-10）按向量
平移后的对应点M'的坐标是（-7，4），a
∴
是一个以M为起点，M′为终点的向量，a
∴
=（-7-8，4+10）=（-15，14）a
故答案为：（-15，14）
| 完形填空 | |||
| My name is Jack Hill. My Chinese teacher is Yang Bin. He 1 from Shanghai. He has 2 children, a son and a daughter. 3 are twins. The son is Yang Chen. The 4 is Yang Xi. Mr Yang and his son 5 in Nanjing, but his wife Chao Feng, a doctor, is 6 . Mr Yang’s daughter is in 7 . She is a college （大学）student. Yang Chen and I 8 the same college. We are classmates and we are good 9 . I teach （教）him English and he teaches me 10 . | |||
| ( )1. A. be ( )2. A. two ( )3. A. These ( )4. A. son ( )5. A. be ( )6. A. Shanghai ( )7. A. English ( )8. A. go to ( )9. A. friend ( )10. A. China | B. am B. three B. Those B. daughter B. am B. from Shanghai B. England B. go B. friends B. Chinese | C. is C. four C. They C. wife C. is C. in Shanghai C. an English C. goes C. student C. Japanese | D. are D. five D. Them D. twins D. are D. at Shanghai D. an England D. are going D. students D. French |