Giữa 2 điểm A và B cách nhau 30km. Một xe máy và một xe đạp, khởi hành cùng lúc tại A và B. Nếu 2 xe đi ngược chiều thì sau 40 phút chúng gặp nhau, còn nếu 2 xe đi cùng chiều theo hướng từ A đến B thì sau 2h chúng gặp nhau tại C ( B ở giưã A và C).Hãy tính vận tốc của mỗi xe? Giải toán bằng cách lập hệ phương trình

Vẽ cho mik cây piano nha NL: bạn thích nhà soạn nhạc nào nhất vậy?

( chia các từ có trọng âm 1-2 ra làm 2 cột)

Giải pt: $\left|x\right|+\left|1-x\right|=x+\left|x-3\right|$

Vẽ anime, chibi hoặc đậu mầm NL: Đang tương tư mấy bae cùng 1 lúc có phải là tham lam ? :)))) Tuyển bae ~~

Reading 12: SARS (Severe Acute Respiratory Syndrome) is a deadly disease. Scientists haven't found the (1) _____ of this disease. SARS is dangerous because it develops quickly. Patients normally (2) ____ a high fever, a sore throat, and cough. Their body temperature is (3) _____ 38°C. Antibiotics cannot cure SARS, and scientists are looking for a (4) _____ to prevent the disease. Before they can find one, it is important to have a (5) _____ lifestyle. You should keep fit, have plenty of fresh air, and eat lots of foods with vitamin C. 1. A. reason B. cause C. source D. ground 2. A. make B. take C. have D. receive 3. A. above B. below C. more D. on 4. A. treatment B. cure C. tablet D. vaccine 5. A. healthy B. rich C. wealthy D. strong

Viết 10 câu so sánh Nước Việt Nam với 1 Nước khác (Lưu ý chỉ so sánh với 1 nước)

Reading 11: Face-to-face conversation is a two-way process: You speak to me, I reply to you and so on. Two-way (1) ____ depends on having a coding system that is understood by both sender and (2) ____, and an agreed convention about signaling the beginning and end of the message. In speech, the coding system is the language like English or Spanish; the convention that one person speaks at a time may seem too obvious to mention. In fact, the signals (3) ____ in conversation and meetings are often (4) ____. For example, lowering the pitch of the voice may mean the end of a sentence, a sharp intake of breath may signal the desire to interrupt, catching the chairman’s eye may indicate the desire to speak in a formal setting like a debate, a clenched fist may indicate anger. When (5) ____ visual signals are not possible, more formal signals may be needed. 1. A. Exchange B. Interchange C. Communication D. Correspondence 2. A. Announcer B. Receiver C. Messenger D. Transmitter 3. A. That people use B. Are used C. Using D. Being used 4. A. Informal B. non-verbal C. verbal D. formal 5. A. their B. These C. This D. That

Reading 10: Rivers all of the world’s most important natural resources. Many cities are on large rivers, and (1) ____ every country has at least one river that plays an important part in the lives of its people. Besides transportation, rivers (2) ____ food , water for crops , water to drink and opportunities for recreation for people who live along their bank and in order to get water for crops engineer sometimes build a dam (3) ____ a river and let the water become a lake behind the dam. Then people can use their water not only to irrigate fields but also to make electricity for home and industries. However the water often becomes (4) ____ when cities on river bank grow inside and the number of industries increases. We are learning that it is necessary to keep rivers clean if we want to enjoy the (5) ___ of the natural resources. 1. A many B. a lot C. plenty D. almost 2. A. provided B. support C. assist D. create 3. A. over B. across C. among D. under 4. A. crowed B. overloaded C. polluted D. excited 5. A. interests B. benefits C. tips D. receipts

GIÚP MÌNH CÂU 5 ĐẾN CÂU 14 VỚI Ạ