từ MnO2,H2SO4 đặc ,KI,HgCl2 có thể điều chế trực tiếp được : a, những đơn chất nào b, những muối nào c,những axit nào

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C. READING. Part 1. Read the passage and then answer the questions below: In the summer holiday, Mr. Lam, Mrs. Hoa and their children, Lan and Thuan, often go to the beach for two or three days. They always go to Vung Tau in the south of Viet Nam. They usually stay in a small house or a flat by the sea, but sometimes they stay in a hotel. Last summer they went to Nha Trang. They stayed at Seaview Hotel for three days. In the morning, Thuan played football with his father on the beach. Lan and her mother walked along the beach and built sandcastles. They visited Tri Nguyen Aquarium and saw different kinds of fish there. They also bought a lot of souvenirs for their friends. 1. Where does Lan’s family often go for their summer holidays? ->............................................................ 2. How long do they often stay there? ->...................................................................................................... 3. Where do they usually stay? ->.............................................................................................................. 4. Where did they go last summer? ->........................................................................................................... 5. What did Lan and her mother do there in the morning? ->....................................................................... 6. What did they see at Tri Nguyen Aquarium? ->.....................................................................................