Bội chung nhỏ nhất của ba số 5;8;10 là
A.50
B.30
C.40
D.60

Mark the letter A, B, C or D on your answer sheet to indicate the sentence that best combines each pair of sentences in the following questions.
Marie Curie was a famous mathematician and physicist. She also won the Nobel Prize for chemistry.
A.Winning the Nobel Prize for chemistry, Marie Curie became a famous mathematician and physicist.
B.Marie Curie, a famous mathematician and physicist, also won the Nobel Prize for chemistry.
C.Marie Curie won the the Nobel Prize for chemistry so she was a famous mathematician and physicist.
D.Marie Curie was a famous mathematician rather than a physicist although she won the Nobel Prize for chemistry.

Mark the letter A, B, C, or D on your answer sheet to indicate the sentence that is closest in meaning to the following question.
He likes the dress. Huong is wearing it.
A.He likes the dress which Huong is wearing it.
B.He likes the dress Huong is wearing.
C.He likes the dress who Huong is wearing.
D.He likes the dress Huong is wearing it.

Mark the letter A, B, C, or D on your answer sheet to indicate the sentence that best combines each pair of sentences in the following question.
I picked up my book. I found that the cover had been torn.
A.Picked up, the book was torn.
B.When picking up my book, the cover had been torn.
C.On picking up my book, I saw that the cover had been torn.
D.The cover had been torn when my book picked up.

Mark the letter A, B, C, or D on your answer sheet to indicate the sentence that is closest in meaning to the following question.
What was the name of the man? You met and talked to him this morning.
A.What was the name of the man you met and talked to whom this morning?
B.What was the name of the man you met and talked to this morning?
C.What was the name of the man whose you met and talked to this morning?
D.What was the name of the man who you met and talked to him this morning?

Cho $ A=\left\{ x\in BC(4;5)|0 < x < 100 \right\} $ . Tập hợp A có bao nhiêu phần tử?
A.3 phần tử.
B.4 phần tử.
C.5 phần tử.
D.6 phần tử.

Mark the letter A, B, C, or D on your answer sheet to indicate the sentence that is closest in meaning to the following question.
Most of the classmates couldn't come. He invited them to the birthday party.
A.Most of the classmates that he invited them to the birthday party couldn't come.
B.Most of the classmates he was invited to the birthday party couldn't come.
C.Most of the classmates he invited to the birthday party couldn't come.
D.Most of the classmates which he invited to the birthday party couldn't come.

Cho $f\left( x \right)={{\left( {{x}^{2}}+5 \right)}^{5}}$ . Giá trị của $f''\left( 1\right)$ là
A.$30250$
B.$30220$
C.$30240$
D.$33240$

Cho hàm số $ f\left( x \right)={{x}^{3}}+2x, $ giá trị $ f''\left( 1 \right) $ bằng
A.8.
B.3.
C.2.
D.6.

Trong các đặc điểm sau của thằn lằn, đặc điểm nào giúp thằn lằn ngăn cản sự thoát hơi nước của cơ thể?
A.Có cổ dài.
B.Mắt có mí cử động, có nước mắt.
C.Màng nhĩ nằm trong một hốc nhỏ bên đầu.
D.Da khô, có vảy sừng bao bọc.