Hệ thần kinh có chức năng gì? Các giác quan có vai trò gì đối với đời sống của động vật?

Exercise 1:Choose the best option to complete each of the following sentences. 1/Can you turn ________the light? -It’s too dark. A. on B. off C. in D. for 2/I suggest ________showers instead of taking bath. A. take B. taking C. to take D. to taking 3/- What are you looking ________? - My picture book. I’ve lost it. A. on B. off C. in D. for 4/A new air-conditioner will be ________tomorrow morning. A. to install B. installed C. installing D. install 5/Scientists are looking for an ________way to reduce energy consumption. A. effect B. affect C. effective D. effectively 6/They are completely short of water now. A number of people have died because of this ________. A. shortage B. short C. shorten D. shortly 7/If you want to save money, you should ____the amount of water your family uses. A. increase B. reduce C. adapt D. repair 8/In order to save electricity, an ordinary 100-watt light bulb can be replaced by a(n) ________. A. energy-saving bulb B. energy-save bulb C. saving energy bulb D. save-energy bulb 9/You should get a (n)________to make sure there are no cracks in the pipes. A. plumber B. mechanic C. electrician D. consumer 10/________you take the train instead of the bus? It’s faster and cheaper. A. Why not B. Why don’t C. How about D. Let’s 11/If we ________less paper, we ________the number of trees in the forests. A. used/ will save B. use/ can save C. can use/ save D. use/ can 12/She won’t take all the suitcases ________she likes to travel light. A. so B. but C. because D. therefore 13/She is very tired. ________, she has to finish her homework. A. moreover B. so C. and D. however

Tính giá trị của biểu thức:ax+ay với a =10,x+y=-2

Cho những phản ứng hóa học sau: Alo + O2-> Al2O3 KNO3 -> KNO2+O2 P+O2 ->P2O5 C2H2 + O2->CO2+H2O HgO -> Hg + O2 Cho biết phản ứng nào là: a,phản ứng oxi hóa b,phản ứng hóa hợp c, phản ứng cháy d, phản ứng phân hủy e, phản ứng tảo nhiệt

Trả lời câu 1 hộ mình 5p th nhé

Tìm tập hợp các số tự nhiên x thỏa mãn: a.) 2x ( x+1) = x + 9

Mọi người giúp mình với ạ.Mình đang cần gấp ạ.Cảm ơn mọi người nhiều ạ.

III.Read the articles about the favourite Saturday activity of some students, and then answer the questions. A.Carlos – Rio de Janeiro, Brazil. Go to Ipanema Beach. Play volleyball or go swimming in the Atlantic Ocean. Look at the people. Everybody is happy. It’s my favourite place. B.Michiko – Tokyo, Japan. Go to a department store in Shibuya. Shibuya is a great shopping area in Tokyo. Sometimes it’s very crowded, but that’s OK -I love shopping. C.Lise – Paris, France. Go to the Eiffel Tower. It’s really tall. Look at the river and the beautiful buildings. The view of Paris is great. D.Jason – New York City, USA. Go to the skating rink in Central Park. Look at the ice-skaters. They’re good! Or, go skating. It’s really fun Is Shibuya in Paris? ________________ Are the ice-skaters in Central Park good? ________________ What is the name of Carlos’s favourite place? ______________ Is Michiko a shopping fan? ________________ Where is Carlos from? ________________ Is the Eiffel Tower in France? ________________ Is Central Park in Tokyo? ________________

Theo em, đặc điểm nào của hệ bài tiết giúp thằn lằn thích nghi cao với đời sống ở cạn?

Tìm một số nhân với. 5 rồi cộng thêm 24 đơn vị được kết quả lak 59.Hãy tìm số đó?