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ngocanhltk8a
2 năm trước
1 máy bay bay tới a gặp 1 khinh khí cầu đang bị gió đưa đi cùng chiều với máy bay sau nửa giờ máy bay quay lại và gặp khinh khí cầu tại điểm cách a 30km tinh vận tốc gió biết vận tốc may bay ko đổi
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(dẫn chứng ra dòng nào để chứng minh cho câu trả lời nhé?) 2. Read and decide whether the statements true or false or not mentioned Halloween was introduced to America by Irish immigrants around the 1840s . The holiday was also known by the name Devil's Night of Hell Night . People played mischievous tricks on their neighbors. For instance , they might steal some of their eggs from the hen house . In today's time it has become more family - oriented with hallowen customs , game like "bobbing for apple" or a contest for the most original costume . To Bob for apple : place apples in a large tub filled with water . With their hands tied behind the backs, people try to catch one of these apples using their teeth . The person catching the most apples win the game. .........1 Irish people introduced Halloween to America .........2 American people have celebrated Halloween for more than two centuries .........3 People knew Halloween by the mane Hell Night ........4 People stole eggs from their neighbors .........5 Halloween is more family-oriented nowadays .........6 People don't wear anything special for Halloween .........7 People have an apple meal .........8 In the game "bobbing for apples" , apples are placed in water .........9 People try to catches the most apples can eat them without paying

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