Giá trị của biểu thức a + (-45) với a = -25 là:

A. -70     

B. -25     

C. 25     

D. 70

Trong các khẳng định sau, khẳng định nào sai?

A. Nếu + 10 000 đồng biểu diễn số tiền có 10 000 đồng, thì – 10 000 đồng biểu diễn số tiền nợ 10 000 đồng.

B. Nếu -15°C biểu diễn 15 độ dưới 0°C thì +15°C biểu diễn 15 độ trên 0°C

C. Nếu + 5 bước biểu diễn 5 bước về phía trước thì – 5 bước biểu diễn 5 bước về phía sau.

D. Nếu – 27m biểu diễn độ sâu là 27m dưới mực nước biển thì + 27m biểu diễn độ cao 27m tính từ mặt đất.

Chọn câu đúng:

A. -6 ∈ N     

B. 9 ∉ Z     

C. -9 ∈ N     

D. -10 ∈ Z

Cho dãy các chất: C r ( O H ) 3 ,   A l 2 S O 4 3 ,   M g ( O H ) 2 ,   Z n ( O H ) 2 ,   M g O ,   C r O 3 . Số chất trong dãy có tính chất lưỡng tính là

A. 4. 

B. 5. 

C. 3. 

D. 2. 

Fill in each numbered blank with one suitable word from the box to complete the passage.

worship       celebrate       However       preparation       traditional

Tet is the biggest festival in Viet Nam. It takes place in the first lunar month of the year; it’s a time for family reunion. To (1) _____________ Tet, Vietnamese people make many tasty (2)______________ foods. The most important food includes Chung cakes, sausages, boiled chicken, spring rolls, and sticky rice. Chung cake is made of sticky rice, pork, green beans and other spices, wrapped in the green leaves; therefore, this cake needs a lot of (3) _____________. This cake can be kept for a long time, even though the weather is often humid during Tet. Other significant food that can’t be missed to (4) ______________ the ancestors are sausages, spring rolls and sticky rice. Because sausages are difficult to make, people often buy them from famous suppliers. (5) _____________, sticky rice and spring rolls are easier to prepare and must be served immediately after they are cooked, so they are often made at home.

Question 2:

The US/ethnic groups/over/a/is/with/multi-cultural/80/ country/.

…………………………………………......…………………..

Mark the letter A, B, C or D on your answer sheet to indicate the correct answer to each of the following questions

The director retired early ____ ill-health.

A. on behalf of

B. in front of 

C. on account of 

D. ahead of

Mark the letter A, B, C or D on your answer sheet to indicate the correct answer to each of the following questions

He sat down, ____ his shoes, and tilted back to relax.

A. pulled up

B. took out

C. pulled off

D. took off

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 questions

A. India

B. alternative

C. continent

D. satisfy