I. Circle the best answer (A, B, C or D) to complete these sentences.

1. Ten years later, when I came back, the city _____, with 800,000 motorbikes and two million bicycles on the roads.

A. had dramatical changed

B. had dramatically changed

C. dramatical had changed

D. dramatically had changed

2. Many valuable things have _____ from man-made wonders.

A. stolen

B. been stolen

C. been stealing

D. steal

3. It ____ that the first temple was built on the current site of Thien Tru in the 15th century during the reign of Lê Thanh Tong.

A. thinks

B. is thinking

C. is thought

D. thought

4. We _____ limiting the number of tourists who can visit these important sites per đây.

A. advised

B. suggested

C. encouraged

D. ordered

5. It's probably best ____ by boat.

A. go

B. to go

C. going

D. went

6. You can see there were only a few classrooms and the walls we're made _____ mud and straw.

A. in

B. of

C. from

D. by

7. _____ the chicken in white wine for one hour before roasting.

A. Slice

B. Chop

C. Marinate

D. Grate

8. _____ Thames runs through London.

A. The

B. A

C. An

D. Φ

9. There isnt't _____ milk in the fridge.

A. a

B. an

C. some

D. any

10. Where are _____ tickets I gave you yesterday ?

A. Φ

B. a

C. an

D. the

11. She bought a _____ of bananas in the supermarket yesterday.

A. loaf

B. bunch

C. stick

D. clove

12. A ______ is a bridge that carries one road over another one.

A. tram

B. skytrain

C. flyover

D. tunnel

Rewrite these sentences as directed in the brackets.

1. I / wish / everybody / aware / importance / preserve / their culture. (Built a sentence)

=>....................................................

2. People claimed that Phong Nha is the biggest cave in Viet Nam. (Use impersonal passive)

=>....................................................

3. I / passed on / I / had heard / the town / from / and / the other / villages / also / the news / . / ( Arrange the set of words to make a complete sentence)

=>...................................................

4. have time / Nam / didn't / got up / for / late, / he / breakfast . / so / (Arrange the sets of words to make a complete sentence)

=>....................................................

5. has / since / He / the played / piano / 2015 / . ( Arrange the sets of words to make a complete sentence)

=>....................................................

I. Circle the best answer (A, B, C or D) to complete these sentences.

1. Ten years later, when I came back, the city _____, with 800,000 motorbikes and two million bicycles on the roads.

A. had dramatical changed

B. had dramatically changed

C. dramatical had changed

D. dramatically had changed

2. Many valuable things have _____ from man-made wonders.

A. stolen

B. been stolen

C. been stealing

D. steal

3. It ____ that the first temple was built on the current site of Thien Tru in the 15th century during the reign of Lê Thanh Tong.

A. thinks

B. is thinking

C. is thought

D. thought

4. We _____ limiting the number of tourists who can visit these important sites per đây.

A. advised

B. suggested

C. encouraged

D. ordered

5. It's probably best ____ by boat.

A. go

B. to go

C. going

D. went

6. You can see there were only a few classrooms and the walls we're made _____ mud and straw.

A. in

B. of

C. from

D. by

7. _____ the chicken in white wine for one hour before roasting.

A. Slice

B. Chop

C. Marinate

D. Grate

8. _____ Thames runs through London.

A. The

B. A

C. An

D. Φ

9. There isnt't _____ milk in the fridge.

A. a

B. an

C. some

D. any

10. Where are _____ tickets I gave you yesterday ?

A. Φ

B. a

C. an

D. the

11. She bought a _____ of bananas in the supermarket yesterday.

A. loaf

B. bunch

C. stick

D. clove

12. A ______ is a bridge that carries one road over another one.

A. tram

B. skytrain

C. flyover

D. tunnel

Rewrite these sentences as directed in the brackets.

1. I / wish / everybody / aware / importance / preserve / their culture. (Built a sentence)

2. People claimed that Phong Nha is the biggest cave in Viet Nam. (Use impersonal passive)

3. I / passed on / I / had heard / the town / from / and / the other / villages / also / the news / . / ( Arrange the set of words to make a complete sentence)

4. have time / Nam / didn't / got up / for / late, / he / breakfast . / so / (Arrange the sets of words to make a complete sentence)

5. has / since / He / the played / piano / 2015 / . ( Arrange the sets of words to make a complete sentence)

Read the text and choose the correct option.

The railway system in Viet Nam was first built in 1899, when Viet Nam was still a French colony. The total (1)____ of the railroad is over 3,000km, with the main route being the North-South (2)____, which is 1,726 km long. This track was considered the backbone of Indochina at the time. Now, the rail system (3)_____ 35 out of the 63 cities and provinces of Viet Nam.

However, the system was (4)_____ damaged by bombings during the war. In 1975, after the reunification of the north and the south, thế Vietnamese government decied to (5)______ the system. In the space of a year, hundreds of bridges, tunnels, and stations were restored, along with 660 km of tracks. The new and improved system was (6)______ the Thong Nhat Express.

1.A. long

B. length

C. wide

D. will

2.A. Railway

B. Road

C. Route

D. Way

3.A. uncovers

B. discovers

C. covers

D. strectches

4.A. seriously

B. importantly

C. serious

D. very

5.A. build

B. restore

C. grow

D. upgrade

6.A. recalled

B. known

C. considered

D. renamed

Answer the questions.

1. When was the railway system in Viet Nam first built?

2. Was the system seriously damaged by bombings during the war?

C1: Khí Clo phản ứng được với tất cả các chất trong dãy nào sau đây?

A. Fe, KOH, H2O

B. KOH, S, Al

C. Cu, O2, H2O

D. H2, Ca(OH)2, O2

C2: Trong những dãy oxit sau, dãy gồm toàn các oxit tác dụng với nước tạo thành dung dịch kiềm là:

A. CuO, CaO, Na2O, K2O

B. CaO, Na2O, K2O, BaO

C. Na2O, BaO, CuO, MnO2

D. MgO, Fe2O3, ZnO, PbO

C3: Fe phản ứng được với dung dịch muối nào sau đây

A. CuSO4

B. MgCl2

C. NaCl

D. Fe(NO3)2

C4: Để điều chế NaOH trong công nghiệp người ta dùng phản ứng nào là hợp lý nhất:

A. Cho Na hoặc Na2O phản ứng nước

B. Điện phân dd NaCl bão hoà, có màng ngăn

C. Chờ dd Na2CO3 phản ứng với dd Ca(OH)2

D. Tất cả các cách đó

C5: Dãy kim loại nào sau được xếp theo chiều tính kim loại tăng dần?

A. Al, Mg, Ca, Ba

B. Mg, Al, Ba, Ca

C. Ca, Ba, Al, Mg

D. Ba, Ca, Mg, Al

C6: Cặp chất nào sau đây cùn tồn tại trong một dung dịch ( không xảy ra phản ứng ) ?

A. Na2CO3 và HCl

B. KNO3 và CaCl2

C. BaCl2 và Na2SO4

D. K2SO3 và Ca(OH)2

I. Circle the best answer (A, B, C or D) to complete these these sentences.

1.A _______ is a building thật has been made stronger and protected against attack.

A. fortress

B. cathedral

C. temple

D. church

2. Don't bother _____ to the museums.

A. go

B. to go

C. going

D. goes

3. I'm travelling around Viet Nam next week. Caan you ____ a good place to visit?

A. introduce

B. recommend

C. talk

D. said

4. A _____ is a cave that is big enough for hunmas to go inside.

A. cavern

B. bay

C. fortress

D. hole

5. The hotel is beautiful _____ in a quiet spot near the river.

A. located

B. situating

C. lying

D. lived

6. Hue's most outstanding attractions are the emperors' _____ .

A. tombs

B. to go

C. cemetery

D. mines

7. It's well worth _____ to the Perfume Pagoda.

A. go

B. to go

C. going

D. went

8. It ______ that many of our man-made wonders have been damaged.

A. is reported

B. has reported

C. reported

D. Was reported

9. I suggest that we ____ the number of tourists visiting them every day.

A. limited

B. should limit

C. limiting

D. limits

10. That's a good idea. I'd like to suggest ____ money to restore and preserve them.

A. raised

B. should raise

C. raising

D. to raise

11. There is a growing ____ that protecting natural wonders has financial benefits as well as cultural importance.

A. recognition

B. setting

C. complex

D. think

12. The players have to work out where the wonder is and ____ gives the correct answer first wins.

A. however

B. whoever

C. whatever

D. whenever

Cho 26gam hỗn hợp Zn, Cu phản ứng vừa đủ với m gam dung dịch axit Sunfuric H2SO4 25% (loãng). Sau khi phản ứng kết thúc thu được 4,48 lít khí hiđro (đktc) và dung dịch A.

a) Viết phương trình phản ứng. Tính khối lượng mỗi kim loại trong hỗn hợp đầu.

b) Tính m.

c) Cho 41,4g kim loại Bari vào dung dịch A khi phản ứng kết thúc thu được dung dịch B. Tính nồng độ phần trăm chất tan trong dung dịch B

Biết Fe=56; S=32; Zn=56; Ba=137