Trong 20 g NaOH có bao nhiêu mol NaOH? bao nhiêu phân tử NaOH? Tính khối lượng H2O trong đó có số phân tử bằng số phân tử NaOH Giúp mình với ạ

V. REARRANGE
1. Play/ the beach/ there/ let's/ and/ time/ go/ have/ to /a =>Let's……………………………………………………………………………………………... 2. Good/ so/ she/ tasted/ a little salt/ the spinach/ added/ to/ it =>She ……………………………………………………………………………………………... 3. know that/ whole life/ the food/ we/ our / we eat / affects. =>We……………………………………………………………………………………………..... 4. don’t like/ my mother/ neither/ does/ cucumbers/ I/ and =>I …….…………………………………………………………………………………………... teenagers in the USA/ surprising results/ had some/ a recent survey of →A recent survey of…………………………………………………………………………… on Sunday morning/ of the club/ the regular activity/ is a 5 km walk to the beach →The regular activity………………………………………………………………………….. and secondary students about/ to teach primary/ the aim of the program is/ water safety →The aim of the program is……………………………………………………………………. table tennis/ I don’t/ with me/ have my/ paddles →I don’t……………………………………………………………………………………… 9. we talk about / we usually read / During dinner, / and sometimes / our day. / we play chess. / Then, =>……………………………………………………………………… 10. in the living room / usually gathers / After dinner, my family / watches TV. / and =>……………………………………………………………………… 11.their favorite artists. / the latest pop music / Teenagers / and see the show of / like to listen to =>……………………………………………………………………… 12.it’s possible to choose / With satellite / from a wide variety / and cable TV, / of programs. =>………………………………………………………………………

III.WORD FORMS: When swimming, we should listen to the pool lifeguards _______ (careful) Nowadays, there are many ______ sport activities after school (differ) The number of _____ in this game is increasing every week (participate) There are no _______ between my answer and his (differ) We encourage students to ________ in the English speaking contest (participant) You must be (care)______ when you cross the street. 1. If the sea level rises, some countries will ____________ (appear) 2. I really feel ___________ __ when I have a high temperature (health) 3. I have an _____________ with my dentist at 8 o’clock. (appoint) 4. When swimming, we should listen to the pool lifeguards ______________ _____ (careful) IV. TRANSFORMATION: 1.She likes going shopping better than watching TV. She prefers ......................................................................... 2.She likes staying at home more than going out. She prefers .........................................................................  3.They prefer going shopping to playing volleyball. They like..................................................................................................................... 4.We prefer walking to driving. We like..................................................................................................................... 5. He prefers golf to tennis.  He likes ............................................................................. 6. My father is a careful driver. My father............................... 7. My brother plays soccer very well. My brother is.................... 8. Children should spend a little time on playing video games. Children shouldn’t ...................... 9. Lan is interested in watching TV and her sisters are, too. => Lan ______________________________________________________- 10. We prefer paying by credit card to paying in cash. =>We like
 __________________________________________________. 11. It took me twenty minutes to travel to the gas station. I spent ............................... 12. My sister plays badminton well. My sister is a.................................. 13. We can ride a horse. They can ride a horse. =>We__________________________________________________________. 14. Deep fried food is not good. Junk food is not good =>Deep fried_______________________ 15.My sister is a very good student. →My sister ………………………………………………………………………………… He swims very skillfully. →He is…………………………………………………. His cousin runs very fast. →His cousin is……………………………………………. Mr. Pike plays tennis very well. →Mr.Pike is…………………………………… These boys dance very beautifully. →These boys are……………………………… You shouldn’t stay up late, it’s not good for your health. →You ought……………………………………… You should do exercise regularly. →Youought…………………………

I.PRONUNCIATION: Choose the word whose main stress pattern is not the same as that of the others:

1.A. Selection. B. Durian

C. Pineapple D.apple

2.A. Vegetables B. Spinach

C. Cucumber D.Papaya

3.A. Carrot B. Important

C. Variet D.Display

4.A. Chopstick B. Energy

C. Neither D. Enjoy

5. A. contest. B. contestant C.detective D. cartoon

6. A. explore. B. athletics C.character D. contestant

7. A. satellite. B. cricket.

C. mixture D. complete

8. A. cartoon B. contest C. perform D. adventure

II. PRONUNCIATION: Choose the word whose underlined part is pronounced differently from that of the the others: 1.A. apple B. candle C. map D.breakfast

2.A. diet B. fish C. dinner D.chicken

3.A. sauce B. daughter

C. cost D. port

4.A. food B. tooth C. noodles D. Flood

5.A. contest B. satellite

C. adventure D. detective

6.A. series B. detective

C. equipment D. vessel

7.A. result B. undersea

    C. scuba D. adult

8.A. adventure B. contest 

C. complete D. taste

1/ aquarium/ there / shop / souvenir / was / a / the exit / near / of / the

There was

2/ delicious / was / the food / and / the/ were/ people / very/ friendly / in Nha trang. The people

3/ hobby/ she / was / thought / sewing / a / useful.

 She

4/ bought / the dress / the material / neighbor / Lan’s / made / and / for her

 Lan’s

5. hope to/ meet you soon/ your visit/ I told/ and they all/ about/ all of my friends/

 I told

6. not to/ My doctor/ smoke/ advised / cigarettes/ me/

 My doctor

7. can eat / you enjoy / but you shouldn’t have / You / the food/ too much /

 You

8. you/ I’ll / some medicine/ give you/ feel better/ to make/

 I’ll

9. see you / few minutes / will / in a / the doctor.

=>The

10. to go back / the nurse / to the / told Hoa / waiting room. =>The

11. Quang Trung School / check-up / are having / the students of / a medical/ =>The students

12. write a / for you / your Mom / sick note / did ?

=>Did

Cảm ơn ạ

1/ She likes listening to music better than playing games She prefers

2/ Nhi likes reading comic books better than watching TV.

Nhi prefers

3/ Don’t forget to clean your hands before meals. Remember

4/ Be sure to turn off the lights before you leave.

Don’t

5/ Be sure to do your homework before you go to school.

Don’t

6. Don’t stay up late at night.

 Remember not

7. We shouldn’t eat too much before going to bed.

 We ought

8. Children shouldn’t spend too much time on video games.

 Children

9. It is a good thing for you to keep the house clean and tidy.

 You ought

10. Mary spends two hours studying in the library every week.

 It takes

11. I often walk from my house to school in 10 minutes.

 I often spent

12. Do you spend half an hour doing that work?

 Does

13. It took us about half an hour to get to the airport.

 We spent

14. I spend half an hour travelling to work by motorbike every day.

=>It takes

15. We finished the work in two hours.

=>We spent

16. You shouldn't watch TV too late.

=>You

3.The mother felt __________ when her daughter came home late last night. (worry) 4. Minh has to see the dentist because he has a ___________. (tooth) 5.We have an ________________ at 3.30 with the doctor (appoint) 6.How is Hoa __________________ now according to her Mom? (differ) 7. You should eat --------------------, exercise regularly, and keep up your social life. (health) 4. 8. Be ---------------------------- with what you eat. (care) 5. 9. Don’t worry! Your cold will last for a few days and then ----------------------. (appear) 8. 10. I have an ------------------------------ with my doctor at 4 pm (appoint) 11.I often wash my clothes and iron them _____________ (care) 12.To keep the dentist away, we should never touch _____________ food. (health) 13. Most ------------------------- people will recover from a cold within a week. (heath) 14. Lan was absent from class because of her ----------------------- (sick)

II/ PRONUNCIATION: Choose the word which has the stress differs from the others A. aquarium B. cushion C. hairdresser D. poster A. between B. improve C. material D. turtle A. hairdresser B. poster C. oceanic D. cushion A decide B. useful C. present D. patient A. prepareB. preventC. contain D. symptom A. arrange B. medicine C. common D. fever A. absentB. advice C. popular D. normal A. degreeB. temperature C. picture D. measure