Xét hai hàm số y = x², y = 2x và đồ thị của chúng trong Hình 2. Đối với mỗi trường hợp nêu mối liên hệ của giá trị hàm số tại 1 và – 1, 2 và – 2. Nhận xét về tính đối xứng của mỗi đồ thị hàm số.

He is disappointed at not being offered the job, but I think he will .................... it.

A. take in

B. get away

C. take after

D. get over

It looks like they're going to succeed .......................their present difficulties.

A. although

B. despite

C. because of

D. but

They spoke .............. for us to understand.

A. too slow

B. slowly enough

C. slow enough

D. so slow

b) Giá trị tant (nếu  $t\ne \frac{\pi }{2}+k\pi ,k\in \mathbb{Z}$) và cost (nếu  $t\ne k\pi ,k\in \mathbb{Z}$).

……….he was sick, he still turned up for his guitar lesson.

A. Because

B. Although

C. If

D. Since

Tom said that he ......................his motorbike the day before.

A. had lost

B. has lost

C. lose

D. lost

My mother suggested …….......................

A. being gone to the countryside this weekend

B. to go to the countryside this weekend

C. go to the countryside this weekend

D. going to the countryside this weekend

........................, " you'll probably get poor marks in the final exam.

A. Although your marks on the tests are not very good

B. Because you're making efforts in your studies

C. Unless you pay more attention to your work

D. If you try to work harder

Cho số thực t và M là điểm biểu diễn của góc lượng giác có số đo t rad trên đường tròn lượng giác, hãy giải thích vì sao xác định duy nhất:

a) Giá trị sint và cost;

Mary will have finished all her work ………………….

A. until her boss will return

B. as soon as her boss returned

C. by the time her boss returns

D. when her boss will return

Trong các biểu thức sau, biểu thức nào là đa thức?

−x³ + 3x + 1;  $\frac{x}{\sqrt{5}};$  $x-\frac{\sqrt{5}}{x};$ 2024; 3x²y² – 5x³y + 2,4;  $\frac{1}{x^2+x+1}.$

...................... he drank, ........................he became.

A. The most / the most violent

B. The less / less violent

C. The more / the more violent

D. More / more violent

Vì sao mặt cắt của sóng nước trên mặt hồ được gọi là có dạng hình sin?

Kí hiệu m, n, p, q theo thứ tự là bậc của đa thức M, N, P, Q cho trong câu 1. Khi đó:

Fiona stayed at work late…….....................

A. so as to complete the report

B. so that to finish some work

C. because she didn't like working late

D. although she wasn't very tired

Mark the letter A, B, C, or D on your answer sheet to indicate the word that differs from the other three in the position of primary stress in each of the following question.

A. priority

B. influence

C. discovery

D. advantage

Mark the letter A, B, C, or D on your answer sheet to indicate the word that differs from the other three in the position of primary stress in each of the following question.

A. attraction

B. argument

C. impression

D. importance

Mark the letter A, B, C, or D on your answer sheet to indicate the word that differs from the other three in the position of primary stress in each of the following question.

A. possible

B. observer

C. excellent

D. difficult

Mark the letter A, B, C, or D on your answer sheet to indicate the word whose underlined part differs from the other three in pronunciation in each of the following question.

A. medals

B. games

C. teams

D. events

Mark the letter A, B, C, or D on your answer sheet to indicate the word whose underlined part differs from the other three in pronunciation in each of the following question.

A. dry

B. sandy

C. geography

D. society

The writer ____.

A. suggested ways to prevent air pollution

B. listed the effects of air pollution

C. proposed solutions to air pollution

D. advised us to prevent lung cancer

Cho các đa thức:

M = xy + 2x²y – 2xy² + x + y;

       N = 3x³y – 7xy² – 3x³y + 4xy² + 2xy – 1;

         P = −0,5x²y² + x²y – 5xy² – xy + 12;

        $Q=-\frac{2}{3}{x}^4+2xy-x+1-\frac{1}{3}{x}^4-2xy+x+x^4.$

Trong các đa thức đã cho, hai đa thức thu gọn là:

Which part of body is not affected by air pollution?

A. Brain

B. Lung

C. Heart

D. Stomach

Which is caused by long- term effects of air pollution?

A. sore eyes

B. bronchitis

C. headache

D. lung cancer

Which sentence is true?

A. Everybody is affected by air pollution in the same way.

B. All people are sensitive to pollutants.

C. Pollutants are not really harmful to people.

D. We are affected by air pollution individually.

The text is about _____

A. air pollution

B. the effect of air pollution

C. those who are affected by air pollution

D. the respiratory diseases

Một mảnh đất có dạng như phần tô màu xám trong hình bên cùng với kích thước (tính bằng mét) được ghi trên đó. Hãy tìm đơn thức (thu gọn) với hai biến x và y biểu thị diện tích của mảnh đất đã cho bằng hai cách:

Cách 1. Tính tổng diện tích của hai hình chữ nhật ABCD và EFGC.

Cách 2. Lấy diện tích của hình chữ nhật HFGD trừ đi diện tích của hình chữ nhật HEBA.

Books are a cheap way to get information and entertainment.

A. Getting information and entertainment in books is a cheap way.

B. A cheap way to get information and entertainment is books.

C. Reading books helps you looking for information and entertainment.

D. Books can deliver information and entertainment you need cheap.

Tính tổng của bốn đơn thức: 2x²y³;  $-\frac{3}{5}{x}^2{y}^3;$ −14x²y³;  $\frac{8}{5}{x}^2{y}^3.$

Perhaps these are the keys.

A. These might be the keys.

B. These won’t be the keys.

C. These must be the keys.

D. These needn’t be the keys.

Some people think that computers can replace books entirely.

A. It is said that computers can replace books entirely.

B. Computers are thought to can replace books entirely.

C. Computers can replace books entirely like some people think.

D. Replacing books by computers is very necessary.

Rút gọn rồi tính giá trị của biểu thức $S=\frac{1}{2}{x}^2{y}^5-\frac{5}{2}{x}^2{y}^5$ khi x = −2 và y = 1.

It's your duty to make a report on books tomorrow.

A. You should report on books tomorrow.

B. You will make a report on books tomorrow.

C. You are supposed make a report on books tomorrow.

D. You must make a report on books tomorrow.

It’s forbidden to smoke in this building.

A. You don’t have to smoke in this building.

B. You are allowed to smoke in this building.

C. You must not smoke in this building.

D. Smoking in this building is permitted.

Tính tổng của các đơn thức trong mỗi nhóm ở bài tập 4.

Two friends James and Susan are talking about Mary’s accident.

James: "Mary had an accident last night. Her leg was broken"

- Susan: "………………………."

A. Poor her.

B. Poor it.

C. How terrific!

D. Oh! Very surprise!

Tom: "Whose book is this?" - John: "……………….."

A. It’s John’s sister.

B. It’s John’s sister’s.

C. That John’s sister’s.

D. John sister’s book.

Sắp xếp các đơn thức sau thành từng nhóm, mỗi nhóm chứa tất cả các đơn thức đồng dạng với nhau: 3x³y²; −0,2x²y³; 7x³y²; −4y;  $\frac{3}{4}{x}^2{y}^3;$$y\sqrt{2}.$

Keep quiet. You ….talk so loudly in here. Everybody is working

A. may

B. must

C. might

D. mustn't