C. READING I. Read the following passage and choose the item (A, B, C or D) that best answers each of the questions about it. HOW TO USE BICYCLE 1. Don‟t ride a bicycle which is not the right size for you. 2. Check a bicycle before using it and make sure that the brakes and steering-wheel work properly and the tyres have enough air in them. 3. When riding a bicycle, always use a cycling track at the side of the road when there is one. 4. Don‟t ride too fast, especially when going down hills and turning corner. 5. Control the speed of your bicycle with your brakes, but always use them gently. 6. When in a group, always ride in single file. 7. Always keep to the side of the road, do not ride in the middle of the road or weave back and forth on the road. 1. You should ride a bicycle which is . A. higher than you are C. your right size B. with high seat D. your favorite 2. Which part of a bicycle is used for changing direction? A. The front wheel C. The tyres B. The back wheel D. The steering wheel 3. When is the most dangerous to ride fast? A. When riding along the roads C. When going down hills B. When turning corner D. B and C are right 4. Which part of a bicycle do you use to control the speed? A. The brake C. The chains B. The lights D. None of the above 5. When you are in a hurry you can . A. ride in the middle of the road B. weave back and forth C. ride dangerously D. ride in a cycling track quickly LÀM VÀ GIẢI THÍCH HỘ MIK VS MIK CẢM ƠN ( NHỚ GIẢI THÍCH ĐẤY )

Cho biểu thức : B = $\frac{1+\sqrt{b}}{1-\sqrt{b}}$ - $\frac{1-\sqrt{b}}{1+\sqrt{b}}$ + $\frac{4\sqrt{3}}{1-b}$ a) Tìm điều kiệ của b để B xác định và rút gọn B b) Tìm giá trị của b để B>-1

ai giup e vs e dang can gap a!e cam on

Mik đăng 2 bài r mà k bạn nào làm đc

Giúp mình hết mấy câu này với ạ , mình đang cần gấp ạ ! CẢM ƠN Ạ

VI. Fill in the gap with the correct possessive adjective or pronoun for these sentences. (Điền vào chỗ trống với một tính từ sở hữu hoặc một đại từ sở hữu) 1. This biscuit is _______________ but you can have it. (I) 2. _______________ shirt is so dirty I can’t even tell what color it is. (you) 3. This is _______________ book, but where is _______________? (she / you) 4. Mark and I always do _____________ homework, but Jennifer often doesn’t do ______________. (we/ she) 5. Please give this book to Mary. It is _______________. (she) 6. She gives him _______________ telephone number, and he gives her _______________. (she/her) 7. I think _______________ garden is bigger than _______________. (they/ we) 8. Is she a friend of _______________? ~ No. She is a teacher of _______________. (you/I) 9. _______________ pen isn’t good, so he borrows _______________. (he/ she) 10. Don’t forget to do _______________ homework. (You)

erxtcgyhvgtrertfghfrft Giúp e vs ạ Nhanh ạ

IV. Điền 1 từ thích hợp để hoàn thành đoạn văn sau (1.0 điểm) This (1)……… Smith’s room. You can see, his room is not very large. (2)………. are two chairs, a table, a bed, a wardrobe (3)……….. a bookshelf in his room. The table is near (4) ……….. window. There is an ink- pot, some books and (5) ……… English- Vietnamese dictionary on the table. The bed is on the right. There are also some books and newspapers on the bed. The wardrope is opposite the bed. Smith has many clothes. (6) ………. clothes are all in the wardrobe. The bookshelf is (7)…….. the wall. There are many (8)………. on it.

√242 √288 √338 Đưa thừa số ra ngoài dấu căn

một hình thoi có độ dài hai đường chéo hơn kém nhau nhau 3 cm và có một đường chéo dài 8cm.Tính diện tích hình thoi