Cho tam giác ABC vuông cân ở A ,M là trung điểm BC , điểm E nằm giữa M và C. Kẻ BH, CK vuông góc với AE . chứng minh rằng: a) BH = AK b) tam giác MBH = tam giác MAK c) tam giác MHK là tam giác vuông cân

Ex1. Read the following passage and answer the questions There are two main kinds of sports : team sports and individual sports. Team sports are such sports as baseball, basketball and volleyball. Team sports require two separate teams. The teams play against each other. They compete against each other in order to get the best score. For example, in a football game, if team A scores 4 goals and team B scores 3 goals, team A wins the game. Team sports are sometime called competitive sports 1. How many main kinds of sports are there in the world? _____________________________________________________________________ 2. Can you name some team sports? ______________________________________________________________________ 3. How many teams do team sports require? _______________________________________________________________________ 4. Why do two separate teams compete against each other? ________________________________________________________________________ 5. What are team sports sometimes called? _________________________________________________________________________ Ex2: Choose the correct word A,B,C or D for each gap to complete the following passage In the match (1)............... Nguyen Du Team, and Trung Vuong Club which took place last Sunday, Nguyen Du Team beat Trung Vuong Club by three goals to two The last time the two teams met, Trung Vuong club won by three goals (2)........................ nil, so Nguyen Du team were making a great discussion to win this match. In the first half to the (3)......................., Trung Vuong club was leading by two (4)................. However, Trung Vuong Club (5).................... a number of careless mistakes during the second half. This was after their player, Minh, missed the ball, slipped and (6)................ heavily Nguyen Du team then (7) ............... two lucky goals, and in the few minutes before the finish, Vinh shot the ball into the net, bringing the score to three goals to two. Nguyen Du Team (8)......................... played well this season and their fans have good reason to be proud. Trung Vuong Club too, has had good results up to now. This is the first game they lost 1.A. on B. between C. of 2.A. to B. by C. for 3.A. play B. match C. performance 4.A. matches B. players C. goals 5.A. is making B. makes C. made 6.A. falls B. fell C. is falling 7.A. had B. scored C. put 8.A. plays B. has played C. played Ex3: Read the text and mark the sentences as True (T) or False (F). A study into children's television viewing habits reveals that children whose parents have high level of education tend to watch less television than children from less educated family backgrounds. The report also suggests that high rate of TV watching amongst children in poorer suburban areas and in the provlnces, compared to those living in large urban centres, is often due to poverty and lack of other kinds of entertainment in the area. Discos, cinema, theatre and sports activities offer children in urban centres a wider range of pastimes, whhich leads to fewer hours being spent in front of TV. Commercial, comedies and adventure films are children's favourite proggrammes, while twenty percent of children said they preferred violent films and thrillers 1. Children whose parents have high level of education watch much TV 2. Children in poorer suburban areas and in the provinces watch less TV 3. There are a lot of entertainments in the suburban areas and in the provinces 4. Children in urban centres have many sports activities to do at pastimes 5. Almost of children like comercial, comedies, and adventure films on TV

mọi người giúp mk với mk đang cần gấp các câu trắc nghiệm. mk hứa sẽ vote 5 sao

Làm ơn giúp mình với vàn gấp lắm

giúp mình với ạ! mình cần gấp lắm cả 3 câu này luôn ạ!!!!

Giải giúp với ạ, đánh giá 5sao tất cả

Một thửa ruộng hình bình hành có đáy là 70m, chiều cao kém đáy 20m. a. Tính diện tích thửa ruộng hình bình hành. b. Trung bình cứ 100m2 thu hoạch được 60kg thóc. Hỏi thửa ruộng đó người ta thu hoạch được bao nhiêu tạ thóc?

Xác định một biện pháp tu từ được sử dụng trong câu văn: “Có phải vì không có dấu mốc rõ rệt nên chúng ta không khao khát trưởng thành cũng như khao khát sự trưởng thành của mình?”.

1) Thế nào là hai số đối nhau? Cho ví dụ? 2) Thế nào là hai số nghịch đảo? Cho ví dụ? 3) Phát biểu quy tắc và viết dưới dạng tổng quát của phép công hai phân số a) Cùng mẫu b) Khác mẫu 4) Phát biểu và viết dưới dạng tổng quát của: a) Phép trừ hai phân số b) Phép nhân hai phân số c) Phép nhân hai phân số 5) Phát biểu và viết dạng tổng quát của các tính chất của phép cộng và phép nhân hai phân số.

rút gọn: 1/(1+r)^2 + 2/(1+r)^3 + ... + (n-1)/(1+r)^n