Hai quả cầu nhỏ mang điện tích đặt cách nhau 3cm trong không khí thì chúng hút nhau bằng một lực 32.10^-3 N. Nếu cho 2 quả cầu này tiếp xúc với nhau thì điện tích của mỗi quả cầu lúc sau là 2.10^-8 C. Tính điện tích của mỗi quả cầu lúc đầu ?

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John is as heavy as his sister. (weight) .......................................................................................................................................................................... My room is as wide as my parents’s room. (width) .......................................................................................................................................................................... This hole is as deep as that hole. (depth) .......................................................................................................................................................................... Minh’s rulers are as long as Nam’s rulers. (height) .......................................................................................................................................................................... Do you think this pair of shoes is as big as that one? (size) .......................................................................................................................................................................... Maria’s first language is English. John’s first language is English, too. (same) .......................................................................................................................................................................... Nana’s school is Rose Primary school. Phuong Mai’s school is Sunflower Primary school. (different) .......................................................................................................................................................................... Jack is the same height with his father. (tall) .......................................................................................................................................................................... Susan’s dress is blue. Amy’s dress is green. (different) .......................................................................................................................................................................... My family’s well is as shallow as my neighbours well. (depth) ..........................................................................................................................................................................

Câu I: Mỗi câu sau có một lối sai tìm và sửa lại 1: My mother is a teacher and either is myfather. 2: Miss Trang has a new school bag and miss Hoa does , neither 3: I don’t like playing video games and so does my brother. 4: I will not go to school the next days and either will my friend. 5: MR ha did home work yestesday and I do, too 6: Miss Trang can’t speak English well and so can’t Miss Hoa. 7: Would you like drink some coffee? 8: My farther used to plays volleyball when he was young. 9: Mr hung didn’t met his uncle for many years. 10; Miss Trang speaks English good than me. 11: No body in my school the most intelligent than Miss Nam . 12; My mother hardly drive car on the narrow stress. Câu II: Viết lại câu đồng nghĩa: 1: I am reading books and My sister is reading books. = I am reading books,…………………………………………… 2: Miss Hoa likes watching film and Miss Hue does , too. = Miss Hoa likes watching film and , ………………….. 3:I was not at home yesterday and Myparents were not at home yesterday. = I was not at home yesterday , and………………………………………… 4: I don’t like meat and Miss Trang doesn’t like meat. = I don’t like met and……………………………………………………….. 4: Miss Hoa driver car carefully. = Miss Hoa is………………………………………………………… 5: I have done my home work for an hour. = IT has been…………………………………………………………….. 6: We have not lived in the City for 10 years. = The last time…………………………………………………………………… 7: My mother enjoys going shopping. = My mother is interested…………………………………………………… 8: I have done home work for two hours . = It has taken…………………………………………………………………. 9;That is an old house and it has 3rooms. = That is …………………………………………………………………………… 10: Miss Hoa can’t do this test because she learns badly. = Miss Hoa learns…………………………………………………………….. ----------------------- the end…………………………………………… các bn giúp mình với mình cần gấp