Read the following passage and mark the letter A, B, C or D to indicate the correct word or phrase that

best fits each of the numbered blanks from 31 to 35.

Early writing and Alphabets

When people first began to write, they did not use an alphabet. Instead, they drew small pictures to (31) _______ the objects they were writing about. This was very slow because there was a different picture for every word.

            The Ancient Egyptians had a (32) _______of picture writing that was called hieroglyphics. The meaning of this writing was forgotten for a very long time but in 1799 some scientists (33) _______ a stone near Alexandria, in Egypt. The stone had been there for over a thousand years. It had both Greek and hieroglyphics on it and researchers were finally able to understand what the hieroglyphics meant.

          An alphabet is quite different from picture writing. It (34) _______of letters or symbols that represent a sound and each sound is just part of one word. The Phoenicians, who lived about
3,000 years ago, developed the modern alphabets. It was later improved by the Roman's and this alphabet is now used (35) _______ throughout the world.

Question 32

A. practice

B. manner

C. plan

D. system

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

Mary, _____ mother is a doctor, intends to choose medical career.

A. who

B. that

C. whose

D. whom

Hòa tan hoàn toàn 24,72 gam hỗn hợp X chứa Fe₃O₄, Cu₂S và FeS₂ trong dung dịch H₂SO₄ (đặc, nóng, vừa đủ) thu được V lít khí SO₂ (đktc) và dung dịch Y chứa 55,6 gam muối. Mặt khác, cho Ba(OH)₂ dư vào Y thu được 124,86 gam kết tủa. Phần trăm khối lượng của Cu₂S trong X gần nhất với giá trị nào sau đây?

A. 26,7%

B. 14,1%

C. 19,4%

D. 24,8%

Loại đột biến nào sau đây thường không làm thay đổi số lượng và thành phần gen trên một NST?

A. Đảo đoạn NST. 

B. Mất đoạn NST

C. Lặp đoạn NST

D. Chuyển đoạn giữa hai NST khác nhau.

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

Emails are _____ among young people than the elders.

A. more used widely

B. more widely

C. more widely used

D. widely more used