Cho hàm số y=x+1; y=2x+3

1) Vẽ 2 đường thẳng cùng hệ trục

2) Tìm tọa độ giao điểm của 2 đồ thị

3) Cho hàm số y=-2x+m-3. Tìm m để 3 đồ thị đồng quy tại một điểm.

Rewrite the sentences without changing the meaning.

1) The last problem that must be considered at our next meeting is how to invest the money. (to)

-> The last problem

2) I went to the zoo last week and that is where I saw a real tiger for the first time.

-> Before I

3) Everyone heard about your trip before I did.

-> I was the

Rewrite the sentences without changing the meaning.

1) I had just picked up the phone to call Simon when he arrived. (about)

->

2) Even though the athletes is attempting to break her own record of the last year, she is unlikely to make it.

-> Despite

3) Tourists throw trash in the places they come to, which will make the places polluted.

->If

4) Fast food may cause high risks of obesity and heart diseases. Fast food is not a healthy food.

->Fast food

Complete each sentence with a suitable preposition.

1) ______others he began to use foreign languages as a means to know the world.

2) They often spend their holidays in their hometown. Last year they went abroad_____ a change.

3) Only____hard work can we achieve something worthwhile in life.

4) After walking around the garden, he sat______ease in an armchair.

5) Dior suspected one of their managers______selling commercial secrets.

Give the correct form of the words in the brackets in each following sentences.

1) Old people prefer to buy_____(pack) tours for their travel because everything is well-prepared by travel agencies.

2) This campaign is held by the local government as a_____(promote) for ecotourism.

3) Old people tend to be interested in cultural tourism, historical tourism and_______(religion) tourism more than any other kinds.

Complete the following sentences with the words or phrases given.

1) One/most significant/ advantage/tourism development/be/jobs/it/bring.

->

Cho 10g hỗn hợp hai muối Na2SO4 và Na2CO3 vào 200ml dung dịch axit clohiđric. Sau phản ứng thu được 1,12 lít khí(đktc)

a, Tính khối lượng mỗi muối có trong hỗn hợp bạn đầu.

b, Tính nồng độ mol của axit clohiđric đã dùng

I/Identify the mistake in this sentences.

1) 'The number' of people who 'survived' the Titanic 'shipwreck' in 1912 'were' quite small.

A.The number B.survived C.shipwreck D.were

II/Give the correct form of the verbs.

2) The reasons why people are attracted to each other____(know) for a long time.

III/Rewrite the sentences without changing the meaning

3) They prefer romantic movies to violent ones. (rather)

->