Cho biết nguyên tử khối của H, S, O lần lượt là 1, 32, 16 đvC. Axit sunfuric có công thức hóa học dạng H₂S_xO₄ và có phân tử khối bằng 98 đvC. Giá trị của x và công thức hóa học của axit là

Dựa vào đấu hiệu nào để phân biệt phân tử của đơn chất và phân tử của hợp chất?

The world of sports is a multimillion dollar industry. Around the globe, people flock to sporting events or watch their favourite teams faithfully each week on television. As a result, professional sports athletes receive huge salaries – well above, for example, those of doctors, lawyers, teachers or social workers. There is some debate about whether such outrageously high salaries are justified.

On the one hand, sport is viewed as a professional career, in which the top players should rightly earn high salaries. Athletes train rigorously from an early age to become peak performers in their field. They face tremendous pressure in each and every game, match or competition. Their personal lives are compromised and they lose all privacy. At the same time, their strong achievements bring honour and attention, not only to themselves, but also to their teams, schools, cities or countries.

On the other hand, various professions contribute to making our world run smoothly. Doctors put in at least ten years of grueling study and internship; their work saves lives. Teachers educate and inspire young people to be responsible citizens: their efforts produce the citizens of tomorrow. Social workers rescue individuals facing physical, mental and psychological challenges: their intervention creates safer societies.

Yet, professionals in the fields above usually struggle to get by, despite their meaningful and critical contribution to the world.

In my view, paying enormous salaries to sportspeople is unnecessary. We need to reconsider our social priorities and eliminate the great disparity in income received by diverse professionals. By doing so, we can build societies in which each one feels valued, appreciated and appropriately compensated for their own vocation or specialization.

-Mọi người nêu nội dung của bài này được không ạ ?

I. Pick out the word whose underlined and bold part is pronounced differently from that of the other words

1.​A.fish​​​B. like​​​C. nine​​D. rice

2.​A. apple​​B. cabbage​​C. take​​​D. matter

3.​A. brown​​B. round​​C. how​​​D. nose

4.​A. takes​​B. yards​​C. starts​​D. books

5.​A. hotel​​​B. those​​C. hospital​​D. cold

6. ​A. end​​​B. help​​​C. ahead​​D. eat

II. Complete sentences using the words in the blankets

1. There …………………five people in Nga’s family. ( am / have   / is / are ).

2. ……………….beef do you want? ( How old / How many /How much/ What)

​- I want 2 kilos of beef. ​ 

3. My father……..……………….to work by car. ( go / travels / drive / live)

4. The hospital is ………..…………….…the river. ( next to / in / on / under)

5. My mother is not big. She is…………..………....( big /  small / fine / game)

6. They………….….…dinner at the moment. ( is having / are having/ have / has)

7. ………..does she live? – On Nguyen Trai street. ( Where/ What / How / Who)

8. My sisters ……………….….teeth every day. ( brush / play / read/ brushes)

III. Use the correct form of the verbs in the blankets

1. In the afternoon, he (read)………………books,and they (play)……………soccer.

2. Do you (like)………………..chicken? No, I ……………………

3. There (not be)……………………any tea. There (be)………………..some coffee.

4. Nam (live)……………………in Gialai. Minh (live)……….…………..in Hanoi.

IV. Put a / an / some  or any

1. I like ………………eggs and …………………..meat.

2. I don’t want ………………soup. I want ………………….vegetables.

3. Nga is …………..…….worker. She has ……………..oval face.

4. Do you want……………………milk? Yes, I want………………

V. Matching

VI. Read and choose the best answers

Today is Sunday, Mrs.Lien (1)………………….to the market. She  goes (2)…….…..motorbike. She (3)……………………many things. First, she wants (4)……………. kilo of fish and five hundred grams of beef. She(5)………………like eggs, so she doesn’t buy eggs. Then, she wants (6)……………………….vegetables. She needs four cans of peas, (7)……………….of toothpaste. She goes home (8)………………ten o’clock.

1.​A. go​​​B. play​​​C. going​​D. goes

2.​A. on​​​B. by​​​C. to​​​D. at

3.​A. want​​B. like​​C. wants​​D. don’t want

4.​A. some​​B. any​​​C. an​​​D. a

5. ​A. not​​​B. don’t​​C. doesn’t​​D. isn’t

6.​A. some​​B. any​​​C. an​​​D. a

7.​A. a bar​​​B. a tube​​C. a box​​D. a can

8.​A. at​​​B. on​​​C. in​​​D. to

VII. Read and choose the best answers

This is Thuan. He is eleven years old. He is in grade 6. His family has four people, his parents, his sister and Thuan. They live in a small house near the Lam river. Thuan gets up at five o’clock. He has breakfast at six fifteen. He goes to school at half past six. The school is not near his house, so he goes by bike. His classes start at seven and end at eleven fifteen. He goes home at twelve o’clock. He has lunch at twelve ten. He likes meat and vegetables. He doesn’t like fish. In the afternoon, he does his homework and then he plays soccer with Minh, his friend.

VIII. Make questions

1. ……………………………………………………………………..?

I live on Quang Trung street

2. ……………………………………………………………………..?

Yes, he plays video games.

3. ……………………………………………………………………….?

She goes to school by motorbike.

4. ……………………………………………………………………….?

I’m in class 6B.

IX. Arrange the words or phrases to make full sentences

1. people/ are/ How / in / family / many/ there/ his.

-> …………………………………………………………………….?

2. and / round / full / has / a / lips / face / Hoa.

-> …………………………………………………………………….

3.  by/ he / school / bus / goes / to      

-> …………………………………………………………………….

4. hungry / We / not /are / 

-> …………………………………………………………………….

5. Mr. Quang / what / do / does.

-> …………………………………………………………………….?

6. music / not / to / Nga / listen / does /   

-> …………………………………………………………………….

7. is/ She / playing/ soccer/ 

-> ………………………………………………………………….

8. bananas / How / does/ many / want / he

-> …………………………………………………………………….?