Mark the letter A, B, C, or D on your answer sheet to indicate the correct answer to each of the following question

I don’t understand what these results _______.

A. significant

B. significance

C. signify

D. significantly

giup cho

a. enough chairs

b. strong enough

c.enough time

d.well enough

e.big enough

f.enough experence

g.enough money

h,enough cups

i experienced enough

j.warm enough

k.enough qualifications  

con cau nao nua giup cho

ok ve cho

a.Mr Long is fat

he is short

He is ugly

He is wearing a sult

b.Nam isn't very old

He is tall 

he is wearing T-shirt and jeans

He has short hair

c. lan is young

 she is beauiful

she is slim

she wears skirt

thieu  1 y nua la day con la dong chu the hien chu de cua truyen ngan 

Ta có A =1.2 + 2.3 + 3.4 + ...+ 98.99 
B = 1^2 + 2^2 + 3^2 +...+98^2 = 1.1+2.2+3.3+...+98.98 
Suy ra: A-B= (1.2 + 2.3 + 3.4 + ...+ 98.99) - (1.1+2.2+3.3+...+98.98) 
= (1.2-1.1) + (2.3-2.2) + (3.4-3.3) +...+ (98.99-98.98) 
= 1(2-1) + 2(3-2) + 3(4-3) +...+ 98(99-98) 
= 1.1 + 2.1 + 3.1 +...+ 98.1 
= 1+ 2+ 3+...+ 98 = [98.(98+1)]/2= 98.99/2 = 4851

đúng nha

co nhieu cau viet giog nhau em dung ghi nha

chuyện trong lòng mẹ