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2 năm trước
Hai điện tích điểm q1 và q2 đặt cách nhau một khoảng 3cm trong điện môi có 81 , có cùng độ lớn điện tích, lực hút giữa chúng là 81.10^-3N. Tìm dấu và độ lớn của hai điện tích? GIÚP EM VỚI Ạ
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Đọc đoạn văn và chọn câu trả đúng cho mỗi câu hỏi dưới đây. Today I go school from 7:30 to 11:30 in the morning. My classroom is very big. My friends are lovely. We usually say “Hello” every morning. When my teacher comes into classroom, everybody stands up and say “Good morning, teacher”. She is a beautiful woman. When our lessons finish, she says “Goodbye, class”. 1. I go to school ____________ in the morning. A. from 6.30 to 10.30 B. from 7.30 to 11.30 2. My classroom is very ____________. A. big B. small 3. When my teacher comes into the classroom, everybody stands up and say “_______________” A. Good morning teacher B. Hello teacher 4. My teacher is _______. A. a lovely woman B. a beautiful woman 5. When our lessons finish, our teacher says “______________” A. Goodbye class B. Good night mum Chọn đáp án đúng. 1. Hi. My name ___________ Lisa. What’s your name? A. am B. is C. well D. your 2. Nice to ___________ you, Minh. A. watch B. look C. meet D. have 3. – “Hi. How are you, Linda?” – “___________”. A. I’m very well. Thank you B. Good night C. Good bye D. Nice to meet you. 4. – Where are you from? – I’m ____________ Vietnam. A. from B. to C. for D. with 5. I’m from ____________. I can speak English. A. England B. Japan C. China D. Vietnam

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