Read the following passage and mark the letter A, B, C, or D on your answer sheet to indicate the correct word or phrase that best fits each of the numbered blanks from 23 to 27.

Nowadays people are more aware that wildlife all over the world is in (23) _______. Many species of animals are threatened, and could easily become (24) _____ if we do not make an effort to protect them. In some cases, animals are hunted for their fur or for other valuable parts of their bodies. Some birds, such as parrots, are caught (25) _____ and sold as pets. For many animals and birds the problem is that their habitat - the place where they live - is disappearing. More land is used for farms, for houses or industry, and there  are fewer open spaces than there once were. Farmers use powerful chemicals to help them to grow better crops, but these chemicals pollute the environment and (26) _____ wildlife. The most successful animals on earth - human beings - will soon be the only ones (27) _____ unless we can solve this problem.

Question 27

A. left

B. alone

C. staying

D. survive

Read the following passage and mark the letter A, B, C, or D on your answer sheet to indicate the correct word or phrase that best fits each of the numbered blanks from 23 to 27.

Nowadays people are more aware that wildlife all over the world is in (23) _______. Many species of animals are threatened, and could easily become (24) _____ if we do not make an effort to protect them. In some cases, animals are hunted for their fur or for other valuable parts of their bodies. Some birds, such as parrots, are caught (25) _____ and sold as pets. For many animals and birds the problem is that their habitat - the place where they live - is disappearing. More land is used for farms, for houses or industry, and there  are fewer open spaces than there once were. Farmers use powerful chemicals to help them to grow better crops, but these chemicals pollute the environment and (26) _____ wildlife. The most successful animals on earth - human beings - will soon be the only ones (27) _____ unless we can solve this problem.

Question 26

A. spoil

B. wound

C. wrong

D. harm

Một este X có công thức là: C_xH_yCOOC₆H_n (d_X/O2 < 4,5). Khi xà phòng hóa X bằng dung dịch NaOH dư thu được hai muối có tỉ lệ khối lượng là 1,4146. CTCT của X là 

A. HCOOC₆H₅

B. CH₃COOC₆H₅

C. CH₃COOC₆H₁₃

D. C₂H₅COOC₆H₅

 Mark the letter A, B, C, or D on your answer sheet to indicate the word(s) OPPOSITE in meaning to the underlined word(s) in each of the following questions.

Question 20: Our well-trained staff are always courteous to customers.

A. helpful

B. friendly

C. help

D. polite

Mark the letter A, B, C, or D on your answer sheet to indicate the word(s) OPPOSITE in meaning to the underlined word(s) in each of the following questions.

Question 19: This speedy and secure service of transferring money can be useful.

A. slow

B. rapid

C. careful

D.hurried

Mark the letter A, B, C, or D on your answer sheet to indicate the word(s) CLOSEST in meaning to the underlined word (s) in each of the following questions.

Question 18: A series of programs have been broadcast to raise public awareness  of healthy living.

A. experience

B. understanding

C. confidence

D. assistance

Cho các phát biểu sau về đột biến đa bội:

(1) Thể tự đa bội chỉ được tạo ra nhờ quá trình nguyên phân.

(2) Sự không phân li toàn bộ bộ NST của hợp tử trong lần nguyên phân đầu tiên luôn tạo ra thể tự đa bội chẵn.

(3) Thể tự đa bội lẻ thường bất thụ.

(4) Thể dị đa bội có thể được hình theo con đường lai xa và đa bội hóa.

Trong các phát biểu trên, các phát biểu sai là

A. (2), (4)

B. (1), (2)

C. (1)

D. (2), (3)