Một người lái ô tô dự định đi từ A đến B với vận tốc 48km/h.Nhưng sau khi đi được một giờ với vận tốc ấy,ô tô bị tàu hỏa chắn đường trong 10 phút.Do đó,để bắt kịp đến B đúng thời gian quy định , người đó phải tăng vận tốc thêm 6km/h.Tính quãng đường AB Giải bài toán bằng cách lập phương trình nhá :D

IV. Choose the best answer from A,B,C or D. 21). Minh is interested .................. the history of Viet nam. A). on B). in C). about D). at 22). A new school ................... in our neighborhood right now. A). is built B). is being built C). is building D). is being build 23). My car .................... yesterday by him. A). was repaired B). has been repaired C). is repaired D). can be repaired 24). My nephew .................... to stay with me next weekend. A). come B). is coming C). will come D). comes 25). ....................... does he have to work so hard? - To earn more money. A). Why B). Who C). What D). When 26). Thank for inviting me to the ........................ festival. A). rice- cooked B). cooking- rice C). rice- cooking D). cooked- rice 27). Children should ............................... to bed early. A). gone B). go C). goes D). went 28). Don't worry about us. We can ................... A). look ourselves B). look for ourselves C). look after our self D). look after ourselves 29). She walked ............... the kitchen and put her packages ................... the table. A). in/ into B). on/ into C). into/ in D). into/ on 30). I saw Peter at the party last night. He .................... a red dress A). wore B). was wearing C). had worn D). wears 31). your hair is long. It needs ....................... A). cut B). cutting C). to cut D). had cut 32). We have learnt English ............................ three years. A). at B). for C). in D). since 33). You ................... forget what I told you. It is very important. A). must B). have to C). can't D). mustn't 34). He doesn't look ...................... to be a famous boxer. A). enough strong B). strong enough C). weak enough D). too weak 35). My friend Nam is .................. He loves giving things to other people. A). skilled B). friendly C). direct D). generous

Cho ABC cân tại A có goc A< 90 do . Qua B kẻ BH vuông góc với AC (H thuoc AC). Qua C kẻ CE vuông góc với AB (E thuoc AB). Gọi M là giao điểm của BH và CE. a) Chứng minh rằng: BE = CH b) Chứng minh rằng: BEM = CHM c) Chứng minh rằng: EH // BC d) Gọi giao điểm của AM và BC là D. Chứng minh rằng: AD BC .

viết lại câu : I was doing exercises at 7 yesterday

Vì sao phải đặt vấn đề bảo vệ rừng A-ma-zôn

Viết đoạn văn khoảng 7 câu nêu cảm nghĩ nghĩ của em về quê hương đất nước . Trong đó có sử dụng thành phần trạng ngữ

-.- Giúp tớ đuy mí pạn đẹp dzai xinhh gái oie:###

giúp mình qua cơn hoạn nạn. I.Give the corect form of the verbs 1.oil(discover) ....... at the north pole for many years 2. It's hard for me (concentrate) ...... ..... on working in such a noisy office

III. Reading and choose the best answer from A,B,C or D. Compost is a wonderful natural resource that helps plants grow well. Today I am going to tell you (16)……........ to start a compost heap. First we must use only household and garden matter (17)…………...... tea leaves and egg shells, but we must (18)………........ them first. Don't use any meat or grain products because this attracts rats. Find a place (19)…………....... your garden that gets a few hours of sunlight each day. The (20)………....... also needs moisture but it will get this from condensation. Cover the heap with a sheet of strong- plastic if the weather is wet. Keep adding to pile and after six months, your compost can be used for your fields , gardens. 16). A). why B). how C). where D). what 17). A). include B). to include C). included D). including 18). A). wash B). to wash C). washing D). washed 19). A). on B). for C). at D). in 20). A). glass B). cans C). compost D). bottles

giúp m nha cho 40 điểm kèm 2 cảm ơn :))