Đáp án + giải thích các bước làm
Bài 5:Giá trị của số kia là:
135×2-246=24
Bài 6:1+1/2=3×1/2(=3/2)
Chúc bạn học tốt nhé
Đáp án:bài 5. số còn lại là 24
bài 6: các dấu lần lượt là cộng , nhân
Giải thích các bước giải:bài 5: 135*2 - 246 = 24
Bìa 6: 1+1/2 =3/2
3*1/2= 3/2
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1. Many students …………….. aerobics to keep fit. A. have B. go C. play D. do 2. We will have a …………….. to take care of our health. A. home robot B. doctor robot C. teaching robot D. worker robot 3. In the future , I will live ………………….because I like swimming. A. in the mountain B. on the Moon C. on the ocean D. under the ground 4. My future house will have a hi-tech robot to ……………………..the floors. A. clean B. cleaning C. cleaned D to clean 5. We might have a ……………… TV so we can watch TV programmes from space. A. wire B. wireless C. wiring D . wires 6. Hoa has never ……………………… to London . A. been B. is C. was D. be 7. If we throw trash on the road, we will_________our environment. A. pollution B. pollute C. polluting D. to pollute 8. They couldn’t go on a picnic ______________the weather was bad. A. because B. when C. but D. Or
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I. Arrange the words into the sentences (2ms) 1. want/ Tom/ Mary/ and/ glasses/ two/ of/ water. .................................................................... 2. sister/ my/ going/ is/ to/ live/ country/ the/ in. ................................................................. 3. going/ dinner/ tonight/ is/ have/ to/ where/ Lan? .................................................................... 4. the/ spring/ in/ what/ weather/ is/ like/ the? ......................................................................... 5. building/ tallest/ the/ is/ this/ city/ the/ in/ world. ........................................................................... 6. Lan's house/ smaller/ is/ house/ my/ than. .................................................................... 7. she/ never/ with/ camping/ goes/ her/ friends. ..................................................................... 8. often/ she/ go/ does/ how/ cinema/ to/ the? ....................................................................
viết chương trình nhập từ bàn phím 1 mảng 1 chiều N (N<=500). In ra màn hình các số chẵn trong mảng
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II/ Choose the best answer (A, B, C or D) that is the same meaning with the italic sentence. 17 to 21. Câu 17: Alexander Graham Bell invented the telephone in 1876 .A. The telephone will be invented by Alexander Graham Bell in 1876. B. The telephone is invented by Alexander Graham Bell in 1876. C. The telephone in 1876 were invented by Alexander Graham Bell. D. The telephone was invented by Alexander Graham Bell in 1876. Câu 18: We are interested in protecting environment. Our teacher is pleased. A. Our teacher is pleased to protect environment. B. Our teacher is pleased that we are interested in protecting environment. C. Our teacher is pleased to be interested inprotecting environment. D. We are interested in protecting environment that our teacher is pleased. Câu 19: My father bought this house 2 years ago. A. This house 2 years ago is bought by my father. B. This house was bought by my father 2 years ago. C. This house bought by my father 2 years ago. D. This house were bought 2years ago. Câu 20: The car is very beautiful. It is made in Japan. A. The car making in Japan is very beautiful. B. The car is very beautiful made in Japan. C. The car made in Japan isvery beautiful. D. The car is made beautiful in Japan. Câu 21: “Can I borrow your ruler, Lan?” asked Viet. A. Viet wanted to lend Lan his ruler. B. Viet asked Lan whether he could borrow Lan’s ruler. C. Lan asked Viet if Viet could lend her his ruler. D. Lan wanted to borrow Viet’s ruler.
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