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thuhuongcay2
2 năm trước
1) Hai tổ sản xuất cùng làm chung công việc thì hoàn thành trong 2h . Hỏi nếu làm riêng một mình thì mỗi tổ phải hết bao nhiu thời gian mới hoàn thành công việc , biết rằng khi làm riêng mỗi tổ 1 hoàn thành sớm hơn tổ 2 là 3h 2) Hai người cùng làm chung một công việc trong 24h thì xong . Năng suất người thứ nhất bằng 3/2 năng suất người thứ hai . Hỏi nếu mỗi người làm cả công việc thì hoàn thành sau bao lâu
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1/ My parents are delighted that my sister_______ her entrance examination into university. A. pass. B. passes C. passed D. is passing 2/He was happy________ her mother. A.to meet B.meet C.meets D.will meet 3/Joanna often _________ playing the piano in her room. A.practice B.practices C.practicing D.will practice 4/He repairs his roof to stop it from ________. A.leak B.leaking C.leaks D.being leaking 5/My father has just finished________ the newspaper. A.read B.reads C.reading D.to read 6/Mr.John washes his car every week,_________? A.does he B.doesn't he C.do he D.don't he 7/I have to study very hard,_______ I can pass the next exam. A.in order B.so that C.therefore D.such 8/ This book is much _________ than that one A.easy B.easier C.easiest D.more easy 9/Soldiers must have ______ to face dangers. A.courageous enough B.enough courage C.such enough courage D.so courageous enough -Giúp em với ạ,kèm cả giải thích lí do chọn luôn ạ,em cảm ơn mọi người rất nhiều ạ ><

They call New York “the Big Apple”. Maybe it’s not (1) ………….. like an apple, but it’s certainly very big. There are too many people, that’s the (2) ………….. . The street are always full of cars and trucks, and you can never find a (3) ………….. to park. If you have enough money, you can take a taxi. New York cabs are yellow. They look all the same. But the drivers are very (4) ………….. . Some were born and (5) ………….. up in New York, but many are (6) ………….. to the United States. A few drive slowly, but most go very, very fast. Cab (7) ………….. is a difficult job. It can be dangerous, too. Thieves often try to steal the drivers’ money. Drivers sometimes get hurt. If you don’t want to take a taxi, you can go by bus or you can take a subway. The (8) ………….. is quick, and it’s cheap, but parts of it are old (9) ………….. dirty. Lights don’t always work and there are often fires on the track. On some subway lines, there are new, clean, silver trains. But you can’t see the color of the old trains easily. There is too much dirt and too much graffiti, inside and (10) ………….. . giúp em ạ. dịch luôn hộ em ạ

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