Phép trừ 9 18 - 4 18  có kết quả là

A.  5 18

B.  13 18

C.  36 18

True or False?

Volunteer work among Vietnamese students

Hue, 17 years old: Being able to make a difference in the lives of people is a wonderful thing to me. That's why I take part in volunteer work. I've been a volunteer for over three years. Once or twice a week, usually on weekends, I teach English and Math to poor children in Long Bien district. My friends and I also encourage other people to donate books to them. We also tutor some young children who can't go to school.

Ngan, 13 years old: My family spends one Saturday morning a month collecting rubbish or planting trees in our neighbourhood. We are not forced or paid to do it, but we enjoy it. In our village, most families volunteer to do this once a month. We cook and give food to patients in some hospitals. My parents also donate their blood once or twice a year to help sick people. At the end of each year, people in my village raise money for poor and homeless people. We love helping others.

Hue started volunteering when she was 14 years old.

A. T

B. F

Read the following passage carefully, and then select the best option A, B, C or D to complete it

Technology, general term for the processes by (1) _______ human beings fashion tools and machines to increase (2) _______ control and understanding of the material (3) _______. The term is derived from the Greek words tekhnē, which refers to an art or craft, and logia, (4) _______ an area of study; thus, technology means, literally, the study, or science, of crafting.

Many historians of science argue not only that technology is an essential condition of advanced, industrial civilization (5) _______ also that the rate of technological change has developed its (6) _______ momentum in recent centuries. Innovations now (7) _______ to appear at a rate that increases geometrically, (8) _______ respect to geographical limits or political systems. These innovations tend to transform traditional cultural (9) _______, frequently with unexpected social consequences. Thus technology can be conceived as both a creative and a destructive (10) _______.

Question 8:

A. for

B. by

C. with

D. without