Có 2 loại bộ nhớ: trong và ngoài

Vd: Bộ nhớ trong:RAM,ROM,...

      Bộ nhớ ngoài:USB,đĩa CD,...

Có 2 loại phần mềm cơ bản: phàn mềm hệ thống và phần mềm ứng dụng

Vd: Pm hệ thống: hệ điều hành,...

      Pm ứng dụng: game,...

7 mb = 7168 kb = 60176 bytes

2 kb = 2048 bytes

2 gb =1024 mb =1073741824 bytes

cam on

III.

1. Driving fast on the road is very dangerous. (danger)

2. Lien's English paper is the worst of the group. (bad)

3. Air pollution can make people healthy. (health)

4. Viet Nam has a lot of beautiful spots. (beauty)

5. Is Vinh Phuc a mountainous province? (mountain)

P/s : mai mk giúp típ nha

dễ vậy mà không làm được

lười làm

1 . Every year , sevenral are giving to the best students

=> give

2 . When the pizza was delivering , it was cold

=> delivered

3 . You will be telling when you can come in

=> tell

4 . That song doesn't played on the radio very often , is it ?

=> wasn't

5 . Your money was stealing out of your bag ?

=> Your money are stealing

6 . We haven't allwed to use a dictionary in the exam yesterday

=> weren't

7 . That film won't have shown in out local cineme for a long time

=> has

8 . I will be picked up from tho station on Sundays ?

=> Will I be

ukm ... thấy nó cứ sai sai sao ớ ... à mà thôi ... mk ko chắc ns đúng hết à

1 plays

2 are reading

3 sing

4 do - do, help

5 is teaching

7 visited

8 doesn't like

9 watch

10 gets - has - brushes - goes - has

11 played - was

12 met

13 are going to have

14 did - do , planted

15 didn't come

16 paint

17 taught

18 have never been

19 takes

20 have - had 

21 received

22 is going to invite

23 is waiting

24 talked

25 is going to travel

26 went - didn't buy

27 doesn't learn - will fail

28 washes

29 will be - watches

30 will phone

2 are reading

3 sings

4 do - do - help

5 is teaching

7 visited 

8 doesn't like

9 watch

10 gets - has

6. 10 brushes - goes

6. 30 has

11 played - was

12 met

13 will have

14 did - do - planted

15 didn't come

16 paint

17 taught

1, Ba is a good badminton player .

\(\rightarrow\) He plays badminton well .

2, Lan is a slow runner .

\(\rightarrow\) She runs slowly .

3, Mrs.Thanh is a quick swimmer .

\(\rightarrow\) He swims quickly .

4, Mrs.Vui is a safe cyclist .

\(\rightarrow\) She cycles safely .

5, Lan's father is a careful driver .

\(\rightarrow\) He drives carefully .

6, My mother is a good cook .

\(\rightarrow\) She cooks well .

7, My sister is a beautiful dancer .

\(\rightarrow\) She dances beautifully .

8, Nam and Ba are skillful soccer player .

\(\rightarrow\) They play soccer skillfully .

9, Mr.Tuan and Mr.Nam are careless driver .

\(\rightarrow\) They drives careless .

10, We should finish our homework first .

\(\rightarrow\) We must finish our homework first .

11, Lan must tidy the house everyday .

\(\rightarrow\) Lan has to tidy the house everyday .

12, Ba ought to cook lunch for his mother .

\(\rightarrow\) Ba has to cook lunch for his mother .

1. Ba is a good badminton player

= Ba plays badminton well.( ko có goodly nha )

5. Lan's father is a careful taxi driver

= He drives taxi carefuly

6. My mother is a good cook

= She cooks well.

7. My sister is a beautiful dancer.

= She dances beautifully

8. Nam and Ba are skillful soccer players

= They are play soccer skillfully

9. Mr. Tuan and Mr. Nam are careless driver.

= They drive car carlessly

10. We should finish our homework first.

= We must finish our homework first.

11. Lan must tidy the house everyday

= Lan has to tidy the house everyday.

12. She ought to cook lunch for his mother

= Ba has to cook lunch for his mother

My first visit to Nha Trang, the coastal city, was three years ago. It was a pleasant and memorable trip.Nha trang, the capital of Khanh Hoa province, has one of the most popular municipal beaches in all of Viet nam. In Nha Trang, nature beauties are so tempting. Waves crashing onto the cliffs, the soft sigh of the sea breeze, clean white sands and turquoise waters, it all makes for a stunning landscape. On my visit to Nha Trang, I used to get up early each morning to stroll along the beach - a chance to breath in the fresh sea air and enjoy the sunrise across the water. One attraction that captivated me three years ago and still it does is the collection of small offshore islands, that is Hon Tre where is the largest of the islands. Nha Trang is the city in hamoney, its fine wather, favorite position and friendly people bring it a certain balance. Nha Trang is a great holiday destination. I hope to have chance to come back

nhanh nhanh nha mai mk nộp rùi

Ex 15: Sentences transformation:

A.1. It has rained at 2 o'clock

2. I started to learn Chinese two years ago

3. He started to collect stamps five years ago

4. She started to learn English 8 months ago

5. They have worked for the enterprise since 2002

B. 1. It's the first time that I have seen that play

2. This is the first time we have faced with such a difficult problem

3. It's the first time I have play this game

4. This is the first time I have seen him here

5. It's the first time I have seen so much here

C. 1. When did you use the car?

2. When did they live here?

3. How long have you seen her?

4. How long have you known her?

5. How long have you worked in that factory?

D. 1. She hasn't worn that dress at her sister's wedding

2. Minh hasn't met his pen pal for 7 months

3. We haven't seen him since January

4. I haven't seen Lan since Tam's birthday party

5. She hasn't visited me for five months