Khi người ta đốt cháy một hợp chất trong khí Oxi thì thu được khí Clo, khí cacbonic và hơi nước. Hãy cho biết hợp chất trên được tạo nên từ những nguyên tố nào? A. Cl, C, H B. O, Cl, H C. C, H, O D. Cl, C, O

Để tách riêng được đường trong hỗn hợp lẫn với Canxi cacbonat (đá vôi) thì cần tiến hành theo phương pháp nào? A. Hòa vào nước, lọc trên giấy lọc rồi chiết bằng phiễu B. Lọc trên giấy lọc, chiết bằng phiễu rồi làm bay hơi C. Hòa vào nước, lọc trên giấy lọc rồi làm bay hơi D. Chiết bằng phiễu, làm bay hơi rồi chưng cất

Yoga originates in India and it is good for both your body and mind. Anyone can do yoga – women or men, adults or children. Special children’s classes are devised to help them to cope with pressures they feel from their schoolwork. By learning how to co-ordinate breathing and movement, yoga helps them to develop body awareness, self-control, and flexibity. Taking up yoga also helps them to focus and become better with daily routines. Start doing yoga by setting aside a regular time for it. Go slowly, listen to your body and don’t push it too far as yoga is not a competitive sport. Study each pose and practise it as you control your body and mind. Prepare well before each session: avoid tight clothing and a full stomach. An idea time to go yoga is before breakfast. a. Answer the following questions. 1. Where does yoga come from? …………………………………………………………………………………………………… 2. Who can do yoga? …………………………………………………………………………………………………… 3. Why should children do yoga too? …………………………………………………………………………………………………… 4. What do you learn when you do yoga? …………………………………………………………………………………………………… 5. How can you prepare for doing yoga? ……………………………………………………………………………………………………

She doesn’t like (communicate) …………………through emails. In fact, she hates (do) ………………….. it. She prefers (meet) ………………….. people in person.