Tính

37.(-69)+(-31).37+(-35)

. Dấu này là dấu nhân nha mọi người

Tính tổng

S=1/1.3+1/3.5+1/5.7+....+1/2017.2018

Tính tổng

S=1/1.3+1/3.5+1/5.7+....+1/2017+2018

Chọn câu trả lời đúng và giải thích tại sao bạn lại chọn câu trả lời đó

1. Trong các hiện tượng sau đây hiện tượng nào không liên quan đến sự nóng chảy

A) Để một cục nước đá ra ngoài nắng

B)Đúc một bức tượng

C) Đốt một ngọn đèn dầu;D) Đốt một ngọn nến 2. Trong các hiện tượng sau đây hiện tượng nào không đi oánh sự đông đặc A)Tuyết rơi

B) Đúc tượng đồng

C)Làm Đá trong tủ lạnh

D) rèn thép trong lò rèn

3.trong các vật sau đây vật nào được cấu trúc dựa trên hiện tượng giãn nở vì nhiệt

A) Quả bóng bàn

B) băng kép

C) Phích đựng nước nóng

D)bóng đèn điện

4. Quả bóng bàn bị bẹp nhúng vào nước nóng sẽ Phòng lên vì

A) vỏ bóng bàn mềm ra và phồng lên

B) Vỏ quả bóng bàn nóng lên và nở ra

C) Không khí trong quả bóng nóng lên và nở ra làm bóng Phòng lên

D) nước tràn vào quả bóng

Tìm phân số có mẫu bằng -7,biết rằng khi nhân tử với 3 và cộng mẫu với 26 thì giá trị của phân số đó không thay đổi.

Bài tập 1.

Task 1. There is ONE mistake in each sentence, try to find the mistake and correct it.

( Mỗi câu sau có 1 lỗi sai, tìm lỗi sai và sửa lỗi).

1. The Royal Palace is one of the largest palace in Europe.

2. "Have you ever eat Ha Noi Pho, Steven?"

3. Up to now, I have visited Da Lat third times.

4. Do you think the most popular Vietnamese writer of children is To Hoai?

5. Sydney Opera House is an UNESCO World Heritage building.

6. The Merlion is a creature with the head of a lion so the body of a fish.

7. New York is an excited city with many skyscrapers.

8. You can play boating on the West Lake and it is very nice.

9. I have been to the beaches in Nha Trang many time with my family.

10. Is Chicago or Los Angeles the two biggest city in the United States?

Bài tập 2.

Task 2. Put the verbs in brackets in the correct verb tense.

( chia động từ trong ngoặc theo đúng thì trong câu).

1. Be careful! The teacher (look) at you.

2. The boy (learn) for three years, but he can't understand this letter.

3. How long (you/know) Paul?

- I (know) him for five years.

4. (she/feed) the cat yet?

5. We (not see) Lan since we (be) on holiday last summer.

6. (she/finish) her homework yet?

7. (your dog/ever bite) anyone?

- Yes, he (bite) the postman last month.

8. Would you like some coffee? I (just/ make) some.

9. (you/ ever be) to Ha Noi?

10. Our school performance (start) late last Sunday because of the heavy rain.

Bài tập 3.

Task 3. Rewrite the following sentences, beginning as shown, so that the meaning stays the same.

(Viết lại các câu sau, giữ nguyên nghĩa câu đề bài)

1. My brother plays football very well.

My brother is __________________________________________________________ .

2. Mai likes playing badminton most.

Badminton is __________________________________________________________ .

3. Sports and games are very important in children's lives.

Sports and games play ___________________________________________________ .

4. Children take part in many after-school activities when school finishes.

Children do ___________________________________________________________ .

5. Lan is very good at basketball.

Lan can ______________________________________________________________

thirsty

theme

there

throw

cave

channel

famous

play

She takes___________in football club.

pass

pat

palace

part

This is a____________film and it makes me cry a lot.

moving

comedy

funny

excited

He is lazy.____________, he is always lucky in examinations.

But

However

So

Therefore

Swimming is a_____________sport in the summer because people want to be in the water in the hot weather.

unhealth

popular

bad

unpopular

She is a___________newsreader. Everyone knows her.

boring

well-known

normal

new

New York is an excited city with many skyscrapers.

excited

with

an

skyscrapers

I have been to the beaches in Nha Trang many time with my family.

time

have been

with

beaches

"Can you pick up the ball, please?"

"Yes, of course I do."

"I play football on Tuesdays."

No, I don't want.

“Yes, here you are."

"It's sunny today."

"Where do you play?"

"How much is the ticket?"

"Yes. Do you want to go to the beach?"

"I like camping."

I a ticket for the football match yesterday.

buy

didn't bought

buys

bought

I went to the shop but I any money.

had

didn't have

don't have

didn't had

Peter and his brother English for three years.

have learnt

are learning

learnt

has learnt

The weather (be) quite good since Christmas.

were

was

is

has been

Nam watches too much television but doesn't play any sports.

You say, "______________________________________________________________________________ "

"Playing sports please"

"you shouldn' watch TV and play sports."

"You're too lazy"

“Don’t watch too much TV; play a sport to keep fit!”

The pool is very deep, and it also has rocks.

You say, "______________________________________________________________________________ "

“Don’t swim here; it’s very deep and it also has rocks.”

" Stop playing here"

“Don’t swimming here; it’s very deep and it also has rocks.”

" just swim in 5 minutes"

Tokyo, the capital of Japan, is a big city. The city is filled with factories, large office buildings. banks, restaurants, and shops of all sizes. It is a (1) for Japanese art, and is home to more than 100 colleges and universities. The city is (2) an important seaport. Most Japanese companies have (3) main offices in Tokyo.

center

capital

house

city

Tokyo, the capital of Japan, is a big city. The city is filled with factories, large office buildings. banks, restaurants, and shops of all sizes. It is a (1) for Japanese art, and is home to more than 100 colleges and universities. The city is (2) an important seaport. Most Japanese companies have (3) main offices in Tokyo.

but

also

so

and

Tokyo, the capital of Japan, is a big city. The city is filled with factories, large office buildings. banks, restaurants, and shops of all sizes. It is a (1) for Japanese art, and is home to more than 100 colleges and universities. The city is (2) an important seaport. Most Japanese companies have (3) main offices in Tokyo.

theirs

their

some

its