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

A. economics

B. regulation

C. individual

D. inspection

Khi nói về đột biến gen, câu nào sau đây có nội dung không đúng?

A. Đột biến gen làn xuất hiện các alen khác nhau cung cấp nguyên liệu sơ cấp cho tiến hóa

B. Mức độ gây hại của alen đột biến phụ thuộc vào điều kiện môi trường cũng như phụ thuộc vào tổ hợp gen

C. Xét ở mức độ phân tử, phần nhiều đột biến điểm thường vô hại (trung tính)

D. Khi đột biến làm thay thế một cặp nucleotit trong gen sẽ làm thay đổi trình tự acid amin trong chuỗi polipeptit

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.

   In a small village in North Yorkshire, there is a big old farmhouse (23) _____________ three families live together. Alice and George and their three children, Joe and Pam and their two children, and Sue and her baby daughter. The adults divide up the work between them. George does the cooking, Joe and Sue do almost the housework. Pam looks after the shopping and (24) _____________ the repairs, and Alice takes care of the garden.

   Alice, George and Sue go out to work. Joe works at home (25) _____________ computer systems, and Pam, who is a painter, looks after the baby during the day. Two of the children go to school in the village, but the three oldest ones go by bus to the secondary school in the nearest town, ten miles away.

   The three families get (26) _____________ well, and enjoy their way of life. There are a few difficulties, of course. Their biggest worry at the moment is money - one of the cars needs replacing, and the roof needs some expensive repairs. But this isn’t too serious the bank has agreed to a loan, which they expect to be able to pay back in three years. And they all say they would much rather go on living in their old farmhouse (27) _____________ move to a luxury flat in a big city.

Điền vào ô 24

A. does        

B. has

C. prepares

D. fulfils

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

I would like to invite you to participate in the .................. ceremony.

A. graduation

B. graduate

C. graduated

D. graduating

Cho hình vẽ mô tả thí nghiệm điều chế khí Z từ dung dịch X và rắn Y:

Hình vẽ trên minh họa cho phản ứng nào sau đây?

A. 4HNO₃ + Cu  Cu(NO₃)₂ + 2NO₂ + 2H₂O

B. 2HCl + FeSO₃  FeCl₂ + SO₂ + H₂O. 

C. 2H₂SO₄ + Zn  ZnSO₄ + H₂.

D. NaOH + NH₄Cl  NaCl + NH₃ + H₂O.