1. my dad didn't go aboard until he was thirty ( SINCE ) -> My dad has ______ 2. they make a lot of mistakes because they are careless ( CAREFULL ) -> Unless ______

kết luận nào sau đây là đúng A)-(-2)=-2 B)-(-2)=2 C)/-2/=-2 D)-/-2/=2

$\sqrt{x^2-1}$ -x+1=0 $\sqrt{x^2-4}$ -x+2=0 Help ME

Cho hình vuông ABCD, tâm O. Trên tia đối của tia BA lấy điểm E, tren tia đối của tia CB lấy điểm F sao cho AE = CF. a) Chứng minh tam giác EDF vuông cân. b) Gọi I là giao điểm của AC và EF. Chứng minh I là trung điểm EF c) Gọi H là giao điểm của DE và BF. Chứng minh OH/BD = HI/FE

vẽ hộ mik 2 bạn nữ anime cung bảo bình nhé,ko chép mạng vs phải tô màu nhé

vẽ tam giác có A= 90 độ . Vẽ đường cao Ah . Gọi Ax,AY,AM lần lượt là tia đối của các tia AB,AC,AH . Nêu tên các cặp góc có cạnh tương ứng vuông góc ( ko kể góc bẹt , vuông ) giúp mình nha mấy bợn !!! . mình cho 5 sao

1. the invention of telephone is ___ useful ( ENORMOUS ) 2. We regret to nnounce that the ___ of flight SA 121 has been delayed ( ARRIVE ) 3. we were greatly ___ at the news of their safe return ( RELIEF ) giup voi

CMR: 1/a + 1/b + 1/c ≥ 3.căn bậc 3 1/abc

2. Choose the best answer for each blank. 1.Eat …….. high fat food for your health. A. much B. more C. less D. a lot 2. You need to spend ………. time playing computer. A. much B. less C. more D. a lot 3. Sitting too close to the TV hurts your ……… A. nose B. eyes C. ear D. mouth 4. Brushing your teeth regularly,………. you get toothache. A. or B. and C. but D. so 5. This test is ………. difficult than that one . A. more B. very C. most D. the more 6. He eats a lot of fruits………….. vegetables. A. or B. and C. but D. so 7. The Japanese eat a lot of fish instead of meat………. they stay more healthy. A. but B. because C. although D. so 8. Rob eats a lot of fast food and he……. On a lot of weight. A. takes B. puts C. spend D. brings 9. We need to spend less time ………. Computer games. A. play B. to play C. playing D. to playing 10. Do more exercise ……. Eat more fruit and vegetables. A. but B. or C. and D. so 11.Do more exercise ……. Eat more fruit and vegetables. A. but B. or C. and D. so 12. After working in computers for long hours , you should……..your eyes and relax. A. wake B. rest C. sleep D. sleep in 13. Eat less high-fast food to keep you from ……. Fat. A. gaining B. reducing C. getting D. rising 14. We should follow the advice from doctors and health……… in order to keep fit . A. manegers B. experts C. people D. workers 15. Have a health …….. and you can enjoy your life. A. lifeline B. lively C. lives D. lifestyle. 16. They go ……….. outside even when it’s cold. A. swims B. swiming C. swimming D. swam 17 . Rob eats a lot of fast food and he……. On a lot of weight. A. takes B. puts C. spend D. brings 18. We need to spend less time ………. Computer games. A. play B. to play C. playing D. to playing 19. To prevent ………., you should eat a lot of garlic and keep your body warm. A. cold B. mumps C. flu D. headache 20. Be careful with …….. you eat and drink . A. who B. this C. what D. that.

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