CÂU 39 B. THEY STAND FOR A SYSTEM CONSISTS OF SECOND, METRE, KG,AMPERE...

Câu

39

b. They stand for a system consists of second, metre, kg,

ampere…

What is the name of a computer- based worldwide information

network?

c. These letters are chemical formula of an element, often

Internet

combines with oxygen in quartz .

SI.