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

The room ……… once a day

A. should clean

B. should be cleaning

C. should be cleaned

D. should have cleaned

Thu gọn rồi tính giá trị của mỗi đơn thức sau:

a)  $A=\left(-2\right)x^{2}y\frac{1}{2}xy$ khi x = −2;  $y=\frac{1}{2}.$                                                      

b) B = xyz(−0,5)y²z khi x = 4; y = 0,5; z = 2.

We can’t read different …………… of books in the same way

A. columns

B. kinds

C. series

D. brands

The Red List has been introduced to raise people’s awareness …………… conservation needs

A. on

B. of

C. at

D. for

……. sometimes describe books as “ hard – to – put – down” or “hard – to – pick – up – again”.

A. Sellers

B. Editors

C. Reviewers

D. Publishers

Cho các đơn thức:

A = 4x(−2)x²y; B = 12,75xyz;  $C=\left(1+2.4,5\right)x^{2}y\frac{1}{5}{y}^3;$  $D=\left(2-\sqrt{5}\right)x.$

a) Liệt kê các đơn thức thu gọn trong các đơn thức đã cho và thu gọn các đơn thức còn lại.

b) Với mỗi đơn thức nhận được, hãy cho biết hệ số, phần biến và bậc của nó.

Gorillas are peaceful and mainly plant – eating …………….

A. creatures

B. figures

C. creators

D. members

She usually dips …………… a travel book.

A. with

B. through

C. in

D. into

Governments have ………… laws to protect wildlife from overhunting

A. passed

B. done

C. given

D. discussed

Books provide us with a wonderful source of knowledge and…...

A. leisure

B. information

C. news

D. pleasure

It is estimated about 5,000 species of plants and animals are ……. each year

A. eliminated

B. cut down

C. hunted

D. poached

Children enjoy reading a ......... because they don’t have to read much

A. thriller

B. comic

C. biography

D. novel

b) Tính sin của các góc lượng giác (OA, ON) và (OA, OP) từ đó tính chiều cao của các điểm N và P so với mặt đất (theo đơn vị mét). Làm tròn kết quả đến hàng phần trăm.

Endangered species are plant and animal species which are in danger of ………

A. expression

B. expulsion

C. extension

D. extinction

Read the following passage and mark the letter A, B, C, or D on your answer sheet to indicate the correct word or phrase that best fits each of the numbered blank 16.

A. should

B. must

C. needn't

D. couldn't