Cho 3 số thực a,b,c. CMR: (5a + 4b + 3c)² ≥ 44(ab + bc + ca)

What kind of career ... do you think is most suitable for you when you've just graduated from college?

A. way  B. ladder  C. path  D. break

Whenever those two ladies meet, they stop..................

A. talking  B. talk  C. to talking  D. to talk.

A. nominated  B. polluted  C. provided  D. destroyed