1. eruption

2. typhoon

3. avalanche

4.volcano

5.landslide

6.draught

7.flood

Xét ΔABC vuông tại A ta có:

cos\(\widehat{ABC}\) = sin\(\widehat{ACB}\)

=>sin\(\widehat{ACB}\)=1/3

III. Rewrite the following sentences, beginning as shown without changing the meaning. (1.0pt)
1. “Do your parents still live in Nha Trang now?” said Nam to me.
        Nam asked me if my parents still lived in Nha Trang then.
2. She wants to buy that villa but it’s too far expensive for her.
She wishes she could buy that villa.
3. “Let’s go out for dinner” Mary said.
     Mary suggested going out for dinner.
4. The last time I heard from my sister was 5 months ago.
     I haven’t  heard from my sister for 5 months.
5. I don’t have a map, so I can’t show you the way
     If I had a map, i could show you the way.
6. The man is my new boss. He is talking to the lady over there. 
     The man who is  talking to the lady over there is my new boss.
7. " Do you like pop music?" he asked me.
    He asked me if i liked pop music.
8. Work hard or your parents will be unhappy.   
     If you work hard, your parents will be happy.
9. Nga said: " I am going to visit my grandmother next weekend."
Nga said that she was going to visit her grandmother next weekend.
10. The doctor is working at Bach Mai hospital. You met him yesterday. 
    The doctor whom You met him yesterday is working at Bach Mai hospital.
11. I’m sorry I don’t know the way to your house.
     I wish i knew the way to your house.
12. She doesn’t work hard, so she doesn’t get good marks.
     If she worked hard, she would get good marks.
13. If the man doesn’t arrive, we will start the conference without him.
     Unless  the man arrives, we will start the conference without him.
14. My boyfriend is now in the hospital He was injured in the accident.
     My boyfriend, who  was injured in the accident, is now in the hospital.
15. “Where did you go last night, Peter?’ Mary said
     Mary asked Peter where he went the night before.

Bài 3

Diện tích hình thang là:

15.15=225(cm^2)

Tổng đáy lớn và đáy bé hình thang:

27+23=50(cm)

Chiều cao hình thang:

225.2:50=9(cm)

ĐS:9 cm

Bài 4:

Chu vi hình tròn ban đầu:3.14x2r

Diện tích hình tròn ban đầu : r x r x3.14

Khi bán kính gấp 2 lần thì bán kính lúc sau là:2xr

Chu vi hình tròn lúc sau: 3.14 x 2 x 2r

Diện tích hình tròn lúc sau : 2xr x 2 xr x3.14= 4x r x3.14

Vậy chu vi đường tròn tăng 2 lần, diện tích đường tròn tăng 4 lần

Choose the best answer by circling A, B, C or D.

Question 5. Most teenagers are                     detective stories.

A. interested about          B. fond of              C. excited on               D. go on

Question 6. Tan: It’s hot in here. - Lan: Ok. I                 on the air conditioner.

A. turned              B. to turn              C. turning          D. will turn

Question 7. His mother won’t be at home tomorrow.               .

A. Neither won’t he.      B. Either will he.              C. He won’t either.         D. He won’t.

Question 8. The doctor examined him and           his temperature.

A. took                    B. made               C. did           D. take

Question 9. Her mother works                      hours than her father does.

A. a few                   B. less              C. much              D. more

Question 10.                     cards is one of Barry’s hobbies.

A. Collects                  B. Collected           C. Collecting         D. Collector

Question 11. Choose the word that is CLOSEST in meaning to the underlined of the following .

  Solar energy is plentiful and it can be replaced easily.

    A. safe               B. polluting          C. abundant                  D. available

Question 12. Please tell him to                       the light. It is getting dark.

    A. turn on                B. turn up              C. turn over       D. turn off

Question 13. We decided to leave the party early                 it was boring.

A. although                               B. because                 C. but                          D. and

Question 14.An is a hard-working student. I think An _________pass the exam easily.

    A. would                  B. has                    C. was                D. will

Question 15.– ‘‘Does that red motorbike belong to your mother?’’ - ‘‘No, _________is white.’’

A. she                         B. her                             C. hers                  D. mine

Question 16.Choose the word that is OPPOSITE in meaning to the underlined of the following

  Peter thinks that the monowheel looks weird.

A. normal                  B. strange            C. unusual           D. ancient

Question 17.I'm sure you'll find the film ___________.

A.amuse                          B.amusing                      C.amused     D. amusement

Question 18.My father __________a lot last year but this year he doesn’t any more.

A. used to smoke                 B. smokes   C. gets used to smoke    D. smoking

Question 19.Nuclear energy can provide electricity for the world needs, but it is __________.

A. dangerous           B. cheap            C. unlimited                             D. safe

Question 20.My brother and I often come to school _____ foot.

A. at                               B. in                     C. on                              D. by

Question 21. Jim: “What about collecting used paper, bottles and plastic bags every day?

  Mary: - “_______”

A. Because they can pollute the environment.     B. How come? Who can do that?

C. That’s a very good idea. Let’s do that.            D. What about this weekend?

Find the mistake in A, B, C, D and circle it(0,6pt)

Question 22.My brother will pedal his monowheel to work at this time next week.

       A           B                       C                         D

Question 23. Which meaning of transport do you think will be used in the future?.

                   A                     B                                C                   D

Question 24. My jet pack is on the ground and her is on the table.

        A                           B                       C       D

\((2x+3)(x+4)-(2-3x)(x-7)\)

\(=2x^2+8x+3x+12-(2x-14-3x^2+21x)\)

\(=2x^2+11x+12-2x+14+3x^2-21x \)

\(=5x^2-12x+26\)

Ta có:

a(b-c) - b(a+c)=ab -ac -ab -bc=-(ac+bc)=-c(a+b)

I. Rewrite the following sentences with no change in the meaning. Use the given words.

1. Nobody is more attractive than her in the contest.

She is ___________the most attractive in the contest.__________________________________________________________

2. China is the most polluted country in Asia.

No country in Asia  __is more polluted than China ________________________________________________________

3. I have never done such a difficult test.

This test is  _______the most difficult  i have ever  done.__________________________________________

4. It is the most delicious drink I have ever tasted.
I have never tasted___such delicious drink _________________________________________________________

II. Write meaningful sentences using the superlative with long adjectives. Don't use contractions.

1. This building/ modern/ in/ the city.

 __________________Thid building is the most modern in the city

2. Playing sports/ common/ activity/ in/ my city.

 ______Playing sports is the most common activity in my city________________________________________

3. It/ fascinating/ trip/ I/ ever/ had.

 __It is the most facinating trip i have ever had _________________________

4. New York/ exciting/ city/ I/ ever/ visited.

New York is the most exciting city i have ever excited

5. Rice/ popular/ food/ in/ Vietnam?

Rice is the most popular food in Vietnam, isn't it?

III. Complete the sentences using the following words: journey, awful, symbol, common, polluted, peaceful, popular

1. The weather in this city is __awful_________. It is very hot and humid.

2. Visiting relatives and friends is the most ___common________family activity during Vietnamese Tet.

3. They went on a long train journey around Europe.

4. Da Lat is a ___peaceful________and lovely city.

5. Big Ben is the cultural ____symbol_______of London and England.

6. - What is the most ___popular________food in Vietnam?

- Maybe it is rice.

7. The air in Beijing has become ____polluted_______recently.

I. Give the correct form of the verb

1. He ………………STUDIES…………….English every day (study)

2. They ………………visited…………….. their grandparents last Sunday. (visit)

3. I ………………will go…………to Hanoi next week. (go)

4. This boy ……………brushes…………………..his teeth three times a day. (brush)

5. She often ……………………………washes…….the clothes in the morning. (wash)

6. We ……………………were practicing…………………Music at that time.(practise)

7. The children ……………………are playing……………..soccer at this time. (play)

8. Lan always ……………………………gets..up early and goes to school on time. (get)

9. Mr Long ……………………has just come…………………back from his farm. (just / come)

10 Pham Duy ……………has composed………………..over one thousand songs up to now. (compose)

II. Multiple choices

⦁ She................Hanoi last year

  A. went B. go C. goes             D. is going

⦁ Now you ..................from New York to Los Angeles in a matter of hours

                 A. are flying B. would fly      C. will fly       D. can fly

⦁ When Carol....................last night, I................my favorite show on television

             A. was calling- watched                B. called- have watched

       C.      called- was watching       D. had called- watched

⦁   By the time next summer, you....................your studies

            A. completes    B. will complete         

       C. are completing      D. will have completed

⦁ Right now, Jim.................the newspaper and Kathy...............dinner

           A. reads- has cooked                      B. is reading- is cooking

          C. has read- was cooking                  D. read- will be cooking

⦁ While I ………………. TV last night, a mouse ran across the floor.

A. watch B. watched C. was watching D. am watching

⦁ The earth ……………… on the sun for its heat and light.

A. is depend B. depending C. has depend D. depends

⦁ I don’t feel good. I ……………… home from work tomorrow.

A. am staying B. stay C. will have stayed D. stayed

⦁ I’ve been in this city for a long time. I …………….. here sixteen years ago.

A. have come B. was coming C. came D. had come

⦁ My family loves this house. It ……….the family home ever since my grandfather built it 60 years ago.

A. was B. has been C. is D. will be

B