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 2:

A. the

B. its

C. their

D. his

Cho hai số phức  z 1 , z 2 thỏa mãn  | z 1 - 20 | + | z 1 - 10 i | = √ ( | z 2 - 20 | 2 + | z 2 - 10 i | 2 ) và | z 1 - 20 | + | z 1 - 10 i | = 10 5 . Giá trị lớn nhất của  | z 1 - z 2 | là

A. 20

B. 40 

C. 30

D.  10 5