Yoou will be frightened when you see a ..........film

A.scary

B.comedy

C.enteraining

D.cartoon

I found the book so.... that I couldn't put it down

A.gripping

B.boring

C.tiring

D.shocking

Cho

M=\(\dfrac{1}{4}.\left(xy^2\right)^3.\dfrac{2}{7}y\)

Q=\(\dfrac{-1}{4}x^2y^5.2xy^2\)

R=-4

S=\(\dfrac{1}{3}x^2y\)

Tính M.R

M+Q

M-Q

M-S

CMR :1/n + 1 + 1/n + 2 + 1/n + 3 + ... + 1/2n > 1/2 với n là số tự nhiên, n > 1