Tìm các bội chung của 8 và 10 thông qua tìm BCNN.

Lúc 12giờ trưa, một ô tô xuất phát từ điểm A với vận tốc 60km/giờ và dự định đến B lúc 3giờ 30 phút chiều. Cùng lúc đó, từ điểm C trên đường từ A đến B và cách A 40km, một người đi xe máy với vận tốc 45 km/giờ về B. Hỏi lúc mấy giờ ô tô đuổi kịp người đi xe máy và dịa điểm gặp nhau cách A bao nhiêu?

Choose the best answer.

The game show this week will test your general ________  about Amazon jungle.

A. schedule 

B. knowledge 

C. fact 

D. adventure

Cho hàm số y = f x = 1 3 x 3 − m + 1 x 2 + mx − 4 .  Tìm các giá trị thực của m để đồ thị hàm số y = f x  có 5 điểm cực trị.

A. m > − 1

B.  m ≥ 0

C.  m > 0

D. m ≥ − 1

Read the passage below and decide whether the statements are TRUE or FALSE?

I’m Brian. I belong to a middle class family. There are six members in my family. They are our parents, grandparents, I and my younger sister. Our grandfather is the head of the family. He enjoys a commanding position. His decision is final in family matters. Nobody can dare to go against him. Everybody respects him. He is the guardian of the family. He is a cool and considerate man. He is just and fair. His decision is never influenced by any other. He is a retired teacher. He helps us in our study. Our grandmother tells good stories.

My father is a police officer. He is a great disciplinarian. He is sincere and hardworking. He always goes to office in time. My mother is a simple housewife. She is a postgraduate in English. She is soft-natured and caring. She takes great care of us. She does not care for her comfort for us. She looks after our grandparents. She helps the poor and the needy. She is religious and God-fearing.

Our family has been known for discipline and values. We give great importance to values and morals in life. Since our early childhood, we are taught to respect the elders and love the children. We learnt the lesson of punctuality and honesty from our grandfather. It is due to the good education of our grandparents that we could excel both in sports and education. Since our childhood we have been put into the habit of rising early in the morning. This has a natural effect on our health and physical fitness.

Our family is like a heaven. There is peace, prosperity, love and care. The younger’s have regard and respect for the elders while the elders shower them with their love and affection. The instructions of the elders are followed with great respect. If a member has some problem the whole family is beside him. I am proud of my family.

Question: He doesn’t get used to getting up early in the morning.

A. True 

B. False

Read the passage below and decide whether the statements are TRUE or FALSE?

I’m Brian. I belong to a middle class family. There are six members in my family. They are our parents, grandparents, I and my younger sister. Our grandfather is the head of the family. He enjoys a commanding position. His decision is final in family matters. Nobody can dare to go against him. Everybody respects him. He is the guardian of the family. He is a cool and considerate man. He is just and fair. His decision is never influenced by any other. He is a retired teacher. He helps us in our study. Our grandmother tells good stories.

My father is a police officer. He is a great disciplinarian. He is sincere and hardworking. He always goes to office in time. My mother is a simple housewife. She is a postgraduate in English. She is soft-natured and caring. She takes great care of us. She does not care for her comfort for us. She looks after our grandparents. She helps the poor and the needy. She is religious and God-fearing.

Our family has been known for discipline and values. We give great importance to values and morals in life. Since our early childhood, we are taught to respect the elders and love the children. We learnt the lesson of punctuality and honesty from our grandfather. It is due to the good education of our grandparents that we could excel both in sports and education. Since our childhood we have been put into the habit of rising early in the morning. This has a natural effect on our health and physical fitness.

Our family is like a heaven. There is peace, prosperity, love and care. The younger’s have regard and respect for the elders while the elders shower them with their love and affection. The instructions of the elders are followed with great respect. If a member has some problem the whole family is beside him. I am proud of my family.

Question: His grandfather’s decisions can be affected by grandmother’s opinions.

A. True

B. False

Cho hàm số f(x) có f ' ( x ) = x 2 - 2 x , ∀ x ∈ R . Hàm số  y = f ( 1 - x 2 ) + 4 x đồng biến trên khoảng nào dưới đây ?

A.  - 6 ; 6

B.  - ∞ ; 6

C.  - 6 2 ; 6 2

D.  - 6 2 ; + ∞