Tìm điều kiện của x để các biểu thức sau có nghĩa

Vẽ phong cảnh, fulk màu, chân thật Khi ai đó hỏi tôi về thất bại Tôi kiểu:

Viết chữ " Chào mừng cún về nhà"(Mong Mod đừng xóa ạ) NL: Mình mới đón một bé cún mới nè

Vẽ anime nam or girl full màu NL: ~~)?? ủa??

Giúp mình test 4 với ạ. Mình cảm ơn

5555x 555+ 666= ......................

Exercise 15. Choose the correct answer A, B, C, or D for each of the gaps to complete the following text. When life changes so fast, the family life will change, too. So what will a family be (1)                 after a hundred years? We can't have the correct answers. Parents will have (2)            babies. They can even choose their child's hair or eye colour. The mother will be busy but she will get help (3)             some friendly house robots. When the family go out together, they will travel on flying cars. These cars will be much faster and there will be no traffic jams (4)                          each flying car can have its own way. There will be love and (5)       between the family members. 1.   A. enjoy            B. like                C. as                   D. so 2.   A. healthier       B. healthiest              C. health              D. healthful 3.   A. with              B. of                   C. at                   D. from 4.   A. so                  B. because            C. although           D. but 5.   A. care              B. careful               C. careless             D. carefully Exercise 16. Read the passage carefully, and then choose the correct answers.        In the future, people will build houses on the moon. The best place for houses in a moon town will be underground. Underground houses will be safe, and the temperatures will not be very high during daytime and not very low at night.        Moon homes may be balloons with oxygen, and people will wear oxygen masks when they are away from home because the moon has no air around it. The house might have beds, tables, and chairs, so people will sleep, eat, and work in their home. Moon-house building will be easy. 1.   In a moon town, what is the best place for house?        A. a balloon        B. on the ground        C. underground        D. in the air 2.   Which of the following is true?        A. The people on the moon will not leave their homes.        B. The people on the moon will wear oxygen masks when they leave their homes.        C. The moon homes are very hot during daytime.        D. The temperatures will be very high during daytime and very low at night. 3.   Why do people need oxygen when they stay on the moon?        A. Because the moon is too large.        B. Because the moon houses are full of air.        C. Because people sleep, eat, and work outside their houses.        D. Because the moon has no air. 4.   How comfortable are the houses on the moon?        A. They have furniture for people to sleep, eat, or work.        B. They have many balloons.        C. They don't have any furniture.        D. They have all kinds of furniture. 5.   In the writer's opinion, will people build houses on the moon?        A. No, they can't.        B. They might not do it.        C. Of course, they will.        D. People only think so.

1. How would you explain the meaning of this word if you (not know) ____ it? 2. We (not be) ____ angry if you had refused the dinner. 3. If I were you, I (not take) ____ it. 4. If Ken (not mend) ____ the car, who will do it? 5. If I (not be) ____ in a hurry when I got up, I wouldn't catch the train. 6. She won't finish it on time if she (not start) ____ right now. 7. Had I driven slowly, I (not crash) ____. 8. She would get fat if she (not stop) ____ eating. 9. Had he not let me know, I (not collect) ____ him at the airport tomorrow morning. (not collect)

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Giúp mình test 3 với ạ. mình cảm ơn