Các bạn ơi giúp mình giải bài này vs ạ

làm hộ b4 với ạ , hứa cho ctlhn , nhanh hộ ạ

Lm nhanh giúp em với em cần gấp

Cho tam giác ABC, có góc A = 90º, d là đường thẳng qua C và vuông góc với BC; tia phân giác của góc B cắt AC ở D và cắt d ở E. Kẻ CH vuông góc với DE, H thuộc DE. Chứng minh CH là tia phân giác của góc DCE?

Tứ giác ABCD có BC=CD và DB là tia phân giác góc D. Chứng minh rằng D là hình thang và chỉ rõ cạnh đáy và cạnh bên của hình thang

I. Choose the best answer to complete each sentence. 7) Most of the undeveloped countries need a lot of ....................... aid. A. together B. unselfish C. mutual D. friend 8) He is too ....................... to lend me his bicycle. A. selfish B. enthusiastic C. helpful D. pleasant 9) Suddenly she recognized the ....................... of the situation that made her laugh. A. wonder B. pleasure C. understanding D. honour 10) He is a .............person because he is always friendly with everyone. A. helpful B. good-natured C. honest D. quick-witted 11) If you want to get a good result in every work, you should have a............. A. loyalty B. sympathy C. constancy D. unselfishness 12) A ..................... friendship is a precious relationship. A. mutual B. sincere C. generous D. successful 13) A good marriage is based on ................................ . A. trust B. loyalty C. secret D. A & B 14) The children seem to be totally .............................. of working quietly by themselves. A. unable B. impossible C. incapable D. able 15) They let their children ................................ up late at weekends. A. staying B. stay C. to stay D. stayed 16) The children were eager ............................ their parents. A. to see B. see C. seeing D. saw 17) I’d rather ........................... at home. A. to stay B. staying C. stayed D. stay 18) Peter is very funny. He makes me ........................... a lot A. laugh B. to laugh C. laughing D. laughed 19) They noticed him .......................... the agreement. A. sign B. to sign C. signs D. signed 20) It’s important for her ............................ the office. A. ringing B. ring C. rang D. to ring 21) They would .................. go by plane than spend a week traveling by train. A. like B. rather C. prefer D. better 22) The boss made us ......................... for a meeting after work. A. to stay B. stay C. staying D. to stay

Câu 16: : Hoa nào dưới đây trên một hoa chỉ có nhị hoặc nhụy? * Hoa hồng Hoa sen Hoa phượng Hoa bầu

tre, nứa,mai vầu giúp người trăm công nghìn việc có phải câu có phé tu từ nhân hóa ko? đây là kiểu câu gì

Tam giác ABC cân tại A có AB=5cm, BC=8cm. Gọi G là trọng tâm của tam giác đó thì độ dài của AG sẽ là A. 1cm B. 2cm C. 4cm D. 3cm

V. Choose A, B, C, or D that is closest in the meaning to each of the following question. 33. It has been a long time since they met. A. They haven’t met since along time. B. . They haven’t met for along time. C. They didn’t meet for along time. D. they didn’t meet a long time a go. 34. It is not necessary for you to wear uniform to school on Sunday. A. You needn’t wear uniform to school on Sunday. B. You must wear uniform to school on Sunday. C. You would wear uniform to school on Sunday. D. You can’t wear uniform to school on Sunday. 35. My children are possible in the living room. A. My children will be playing in the living room. B. My children can not be in the kitchen. C. I don’t know my children are in the living room. D. My children might be in the living room.