Trung hòa 20g dd H2SO4 24,5% bằng dd NaOH 1M (D=1,05g/ml)

a) Viết PTPỨ

b) Tính Vdd NaOH đã dùng

c) Tính C% dd muối thu được sau PỨ

Cho ngũ giác lồi ABCDE. Gọi M,P,N,Q lần lượt là các trung điểm của AB, BC,CD, DEvà H, K lần lượt là trung điểm của MN và PQ. Chứng minh: AE // HK và AE = 4 HK.

Put the verbs in brackets in the correct form or tense to complete the conversations. Write your answer in the numbered boxes below.

A. Lan: Could you please tell me your address?

Daisy: Well, I (1. live) ______ in a friend’s house at the moment. Luckily I (2. find)

_______ a place of my own now, but I can’t move in until next week.

B. Nam: Could you tell Tom to ring me, please?

Alvin: Yes, I will tell him when I (3. see) ______ him tomorrow.

C. Ha: What happened with Rachel?

Liz: She (4. come) ______ downstairs when the lights (5. go) ______ out. She

almost fell over.

D. Peter: Your new trousers look nice.

Jack: Thank you. They (6. not/ fit) ______ properly.

E. David: Did you buy anything at the store yesterday?

Susan: No. I wanted to buy some jewellery, but I (7. leave) ______ my credit card at home.

6. The flight from London to New York has been cancelled _______ the heavy fog.

A. as a result B. despite C. on behalf of D. on account of

7. They missed the beginning of the movie; they enjoyed it, _______ .

A. although B. though C. but D. too

8. We’re really _______ because we have been walking more than 20 kilometres.

A. distinguished B. excited C. exhausted D. amused

9. Not until 2008 _______ across the river.
A. did build the first bridge B. was the first bridge built
C. was built the first bridge D. did the first bridge build

10. There’s no _______ that life exists on other planets.

A. evidence B. experience C. condition D. creature

11. The bad weather _______ the plane being delayed.

A. caused B. made C. resulted in D. created

12. The actress is wearing a _______ dress.

A. red new pretty B. new pretty red C. pretty red new D. pretty new red

Cho hình bình hành MIQK có chiều cao MH (H thuộc QK). lấy điểm D bất kì thuộc QK, D khác H. tính tỉ lệ S hình bình hành MIQK và S tam giác MDI

I.Put the verbs in brackets in the correct form or tense to complete the letter. Write your answer in the numbered boxes below. 0 has been done as an example.

Hi Claire,

Just a quick message from England !

I can't believe I (0) ______________ (be) here for two weeks already. I (1) ____________ (have) such a great time! The university is very impressive and I (2) _____________(feel) so proud to be here.

So far, I (3) ______________ (meet) a lot of students from other countries and I (4) ______________ (share) a large room with a girl from Hong Kong until she gets a room of her own.

The head of our department (5) ______________ (plan) an international party for this weekend.

I hope it’s a good one. I haven't been to a party for ages!

When (6) ______________ (you/ leave) for Rome?

(7) ______________ (you/find) a house yet?

Write back soon.

Lots of love,

Claire

II. Choose the word that has underlined part pronounced differently from the test.

1. a. sticky b. fairy c. story d. reply

2. a. honest b. human c. hero d. historian

3. a. looked b. stopped c. screamed d. missed

4. a. character b. church c. choose d. cheerful

5. a. procession b. confusion c. production d. tradition

III. Choose the word that has different stress pattern.

1. a. anniversary b. celebration c. ceremony d. politician

2. a. lantern b. princess c. emperor d. incense

3. a. reunite b. defeat c. command d. swallow

4. a. preservation b. communicate c. commemorate d. participate

5. a. cunning b. unkind c. greedy d. generous

IV. Filling each blank with a suitable word. The first letter of the word has been provided.

1. Tet, or Lunar New Year, is the most important f___________ in Vietnam.

2. In the UK, there are a lot of c___________ for table manners.

3. Most Vietnamese people have family altars to w___________ their ancestors.

4. Saint Giong is a mythical h___________ who helped King Hung to defeat the An.

5. It’s important to p___________ our culture for future generations.

6. Xoan singing is traditional f___________ singing originating from the northern province of Phu Tho.

7. The Fox and the Grapes is one of the most popular f___________.

8. At the beginning of the festival, they p___________ a ritual of offering incense.

9. Millions of Japanese visit hometowns for family r___________ during the Obon Festival.

10. The o_______ demanded the annual sacrifice of a young village girl to satisfy his blood lust.