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2 năm trước

T or F 1. Water accounts for two-thirds of our Earth's surface. 2. The main reason for water pollution is from agriculture. 3. The water we drink is totally clean and safe.

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john6aqt

2 năm trước

1. T

2.F

3.T

chúc bn học tốt

Thu Trang

2 năm trước

1,T

2,F

3,T

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Nêu những biện pháp phòng chống cháy nổ nơi em ở

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Giá trị lớn nhất của biểu thức B = 2 − 5x^2 − y^2 − 4xy + 2x là

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Xét x= -2 có là nghiệm của đa thức k 5x+3=2x-3 1/4x-1=x+2 -x+5=2(1-x)

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