Cho $ \Delta ABC $ cân tại $ A $ . Gọi $ M $ là trung điểm của $ BC $ , độ dài đoạn $ BC=8cm,\,\,\text{ }AC=5cm $ . Độ dài đoạn $ AM $ là 
A. $ 3cm $ .
B. $ 2cm $ .
C. $ 4cm $ .
D. $ 5cm $ .

Đun nóng dung dịch saccarozơ (xúc tác axit) thu được
A.glucozơ và fructozơ.
B.mantozơ và fructozơ.
C.mantozơ và xenlulozơ.
D.glucozơ và mantozơ.

Choose A, B, C, or D to indicate the word that differs from the rest in the position of the main stress.
A.material
B.deposit
C.quality
D.commodity

Mark the letter A, B, C, or D on your answer sheet to indicate the word that differs from the other three in the position of primary stress in each of the following questions
A.Eloquence
B.Circumstance
C.Guarantee
D.Discipline

Choose the word that has the stress differently from that of the other words
A.define
B.idea
C.express
D.figure

Mark the letter A, B, C, or D on your answer sheet to indicate the word that differs from the other three in the position of primary stress in each of the following questions
A.mobile
B.laptop
C.device
D.engine

Mark the letter A, B, C or D on your answer sheet to indicate the word that differs from the other three in the position of primary stress in each of the following questions
A.equality
B.variation
C.deficiency
D.intelligence

Choose the word that has the stress differently from that of the other words
A.nation
B.comfort
C.moment
D.apply

Mark the letter A, B, C, or D on your answer sheet to indicate the word that differs from the other three in position of primary stress in the following question.
A.interpret
B.internal
C.internet
D.interpreter

Mark the letter A, B, C, or D on your answer sheet to indicate the word that differs from the other three in position of primary stress in the following question.
A.prevent
B.remote
C.receive
D.recent