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taloc923
2 năm trước
Nguyên tố brom có 2 đồng vị, trong đó,79Br chiếm 54,5% Nguyên tử khối trung bình là 79,91 Tính số khối của đồng vị thứ 2?
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PART 2 I. Find the word which has a different sound in the underlined part. 1. A.origami B.prize C.divide D.like 2. A.comedy B.leisure C.cinema D.celebration 3. A.adore B.fancy C.attract D.alive 4. A.bread B.read C.meat D.peach 5. A.school B.church C.children D.watch II. Mark the letter A, B, C, or D to indicate the word whose main stress is places differently from the rest. 1. A.football B.windsurfing C.badminton D.aerobics 2. A.volleyball B.weather C.winter D.vacation 3. A.climbing B.canoeing C.cricket D.cycling 4. A.leisure B.diving C.origami D.movie 5. A.adore B.enjoy C.fancy D.detest III. Odd one out. 1. A.leisure B.magazine C.newspaper D.novel 2. A.adore B.enjoy C.detest D.fancy 3. A.market B.mall C.community center D.mart 4. A.a comedy B.a thriller C.an action D.DIY 5. A.boring B.exciting C.interesting D.relaxing IV. Read the article then answer the questions. Take a Bath! Traveling is fun because you can see how people in other parts of the world live. One thing travelers don't often think about before traveling is how other cultures bathe. And bathrooms in many countries may be different from the kind you are used to. In the United States, most people take a shower once a day in the morning. The showerhead is usually mounted on the wall and cannot be moved. The bather simply stands under the water, gets wet, scrubs with soap and often a washcloth, and then rinses off. Children often take a bath each night and enjoy playing with small toys such as boats and rubber ducks. Many adults, especially women, enjoy a soothing bath to get rid of stress at the end of the day. It is important to remember that when you take a shower or bath in the United States, you should be careful to keep the water inside the bathtub or shower. Unlike bathrooms in many countries, there is no drain in the floor. If water gets on the floor it cannot go anywhere and must be cleaned up with a towel or mop. It can also cause problems for the floor. So be careful. 1. What the traveler don't often think about? 2. When do Americans often take a shower? 3. What about children? When do they take a bath? 4. What should you remember when taking a shower or bath in the United States? 5. Do you think that taking a bath can get rid of stress at the end of the day? V. Using the adjectives in the box to complete the sentences below. peaceful quiet slow safe inconvenient vast friendly nomadic 1. It is wonderful to lie and watch the movement of clouds in the clear and blue sky. 2. In the countryside, people can see the fields stretching to the horizon. 3 It is very to live in the remote and mountainous areas because of lacking labour-saving devices. 4. People living in my village are very and kind. 5. Be ! The baby is sleeping. 6. It is to go outside in the countryside, even at night. 7. The atmosphere in my village is very with birds singing beautifully in the mornings. People live in harmony and help each other. 8. Some ethnic minorities have a life. They have to move to get food and find new land to cultivate. VI. Write the correct form of verbs in the bracket. 1. It (be) often hot in summer. 2. The children often go (swim) in rivers after school. 3. It is necessary (water) the flowers twice a day. 4. Farmers are always busy with (harvest) their crops. 5. Mai (love) (listen) to the morning sounds in the countryside. 6. My father always (make) important decisions in my family. 7. In summer afternoons, children often (fly) kites especially when it (be) windy. 8. We sometimes (gather) around the campfire and (listen) to the elderly tell stories about my village's heroes. VII. Use the adjective in brackets in their correct forms of comparison to complete the sentences. 1. The buildings in cities are much houses in the countryside. (high) 2. There are trees in villages in cities. (many) 3. Of three cattle raised in my village, chickens are . (popular) 4. The life in cities is and than in the countryside. (fast,convenient) 5

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