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

We have bought some _____________.

A. German lovely old glasses

B. German old lovely glasses 

C. lovely old German glasses

D. old lovely German glasses

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

Tim would like to specialize _____________ computer science.

A. of

B. to

C. in

D. at

tick cho em nha chị thank you very much

ta thấy nếu \(12^y\) có y > hoặc = 1

=> \(12^y\) chia hết cho 2 mà 26 cũng chia hết cho 2

=> \(5^x\) cũng chia hết cho 2

mà \(5^x\) không chia hết cho 2 vì luôn tận cùng = 5

=> y ko thể > hoặc = 1 => y = 0

=> \(5^x+12^0=26=>5^x=25=>x=2\)