Tốc độ phản ứng A + B  C sẽ tăng lên bao nhiêu lần khi nhiệt độ phản ứng từ 25⁰C lên 55⁰C biết rằng khi tăng nhiệt độ lên 10⁰C thì tốc độ phản ứng tăng lên 3 lần

A. 9 lần

B. 12 lần

C. 27 lần

D. 6 lần

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.

Some kinds of fish live in fresh water. Others live in sea water.

A. Some kinds of fish live in fresh water, for others live in sea water

B. Some kinds of fish live in fresh water, and others live in sea water

C. Some kinds of fish live in fresh water, or others live in sea water

D. Some kinds of fish live in fresh water, so others live in sea water

Read the following passage and choose the letter A, B, C, or D to indicate the correct answer to each of the questions:

THE OPEN UNIVERSITY

The Open University was created in 1968 to give people who cannot afford (1)________attend regular courses of study, the opportunity of studying    and (2)________a university diploma or degree. They study at home and their academic performance is assessed by (3)________of written examinations or project work. Most Open University    students (4)________in study while also holding down a job or coping with a busy home life. They study in order to update their job skills  or  for personal (5)________.

At the heart of  most courses is    a (6)________of specially written and  professionally printed textbooks and workbooks which students receive by post. On many of the courses, students are expected to watch television programmes on the BBC   network, (7)________are usually broadcast in  the  (8)________  hours  of  the  morning. The (9)________of these programmes is to develop  and broaden the study experience, (10)________students do not have to rely only on the printed material they are sent.

Điền vào ô 9

A. end                            

B. aim                           

C. reason              

D. cause

Mark the letter A, B, C or D on your answer sheet to indicate the word whose underlined part differs from the other three in pronunciation in each of the following questions.

A. gloves

B. says

C. months

D. sings

M là hỗn hợp hai axit cacboxylic đơn chức đồng đẳng kế tiếp với số mol bằng nhau ( M X < M Y ). Z là ancol no, mạch hở có số nguyên tử cacbon bằng số nguyên tử cacbon trong X. Đốt cháy hoàn toàn 0,4 mol hỗn hợp E gồm M và Z cần vừa đủ 31,808 lít oxi (đktc) tạo ta 58,08 gam CO₂ và 18 gam nước. Mặt khác, cũng 0,4 mol hỗn hợp E tác dụng với Na dư thu được 6,272 lít H₂ (đktc). Để trung hòa 11,1 gam X cần dung dịch chứa m gam KOH. Giá trị của m gần nhất với giá trị nào sau đây?

A. 8,9

B. 6,34

C. 8,6

D. 8,4