* 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 31 to 35.

  For kids, water sports are adventurous and fun filled, but safety has to be given first (31) ________. All kids should compulsorily wear life jackets, (32)_________they know how to swim. All boats and rafts should also carry (33)__________ life jackets, whistles and lifebuoys. While playing water sports, kids need to be accompanied by an adult, preferably an attentive lifeguard, who must know how to swim. He should also know what to do during times of emergency and the ABCs of giving first (34)__________Water sports should always be carried out when the climate is pleasant. If the weather is sunny, do apply sun screen cream to protect the children from radiations.

  There are different kinds of water sports for children. Let's start with a simple water sport (35)_________boating, which is very much enjoyable. In most of the kids and youths camps you'll find boating and canoeing. If you want an adventurous water sport, then sailing has to be your first choice.

(Adaptedfrom: https://www.ezilon.eom/articles/articles/8063/l/Water-Sports-for-Kids)

       Điền vào số 35

A. such

B. like

C. similar

D. as

Một bát cơm nguội để lâu trong không khí trải qua các giai đoạn: những chấm nhỏ màu xanh xuất hiện trên mặt. Các sợi mốc phát triển thành từng vệt dài và mọc trùm lên các chấm màu xanh. Sợi nấm mọc xen kẽ mốc, sau hai tuần nấm có màu vàng nâu bao trùm lên toàn bộ bề mặt cơm. Diễn biến đó là

A. Sự phân huỷ.

B. Sự cộng sinh giữa các loài

C. Quá trình diễn thế.

D. Sự ức chế cảm nhiễm

Ở một loài thực vật lưỡng bội có 5 nhóm gen liên kết. Có 10 thể đột biến số lượng nhiễm sắc thể được kí hiệu từ (1) đến (10). Bộ nhiễm sắc thể của mỗi thể đột biến như sau:

(1) Có 22 nhiễm sắc thể.            (2) Có 25 nhiễm sắc thể.    

(3) Có 12 nhiễm sắc thể.            (4) Có 15 nhiễm sắc thể.

(5) Có 21 nhiễm sắc thể.            (6) Có 9 nhiễm sắc thể.      

(7) Có 11 nhiễm sắc thể.            (8) Có 35 nhiễm sắc thể.

(9) Có 18 nhiễm sắc thể.            (10) Có 5 nhiễm sắc thể.

Trong 10 thể đột biến nói trên, có bao nhiêu thể đột biến thuộc loại lệch bội về 1 hoặc 2 cặp nhiễm sắc thể?

A. 2

B. 3

C. 4

D. 5

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 33 to 37. Fill in the appropriate word in question 37

AS OLD AS YOU FEEL

It might after all be true that you are only as old as you feel. A British clinic is carrying out new high-tech tests to calculate the “real” biological age of patients (33) ______ on the rate of physical deterioration. Information on every aspect of a patient’s health, fitness, lifestyle and family medical history is (34) ______ into a computer to work out whether they are older or younger than their calendar age suggests.

The availability and increasing accuracy of the tests has prompted one leading British gerontologist to call for biological age to be used to determine when workers should retire. He (35) ______ that if an employee’s biological or “real” age is shown, for example, to be 55 when he reaches his 65th birthday, he should be incited to work for another decade. Apparently most employers only take into (36) ______ a person’s calendar years, and the two may differ considerably. Some of those prepared to pay a substantial sum of money for the examinations will be able to smugly walk away with medical evidence showing that they really are as young as they feel, giving them the confidence to act and dress as if they were younger. Dr Lynette Yong, resident doctor at the clinic where the tests are offered claims that the purpose of these tests will be to motivate people to (37) _______ their health.

The concept of “real” age is set to become big business in the USA with books and websites helping people work out whether their body is older or younger than their years. Others firmly believe that looks will always be the best indicator of age. 

A. increase

B. gain

C. improve

D. progress

Mark the letter A, B, C, or D on your answer sheet to indicate the underlined part that needs correction in each of the following questions.
People live (A) in big cities (B) often have trouble (C) making friends (D).

A. People live

B. big cities

C. trouble

D. making friends

Hiđrat hóa 2 – metylbut – 2 – en (điều kiện nhiệt độ, xúc tác thích hợp) thu được sản phẩm chính là:

A. 2 – metylbutan – 3 – ol

B. 3 – metylbutan – 2 – ol.

C. 3 – metylbutan – 1 – ol

D. 2 – metylbutan – 2 – ol

Cho góc nhọn xOy và một điểm O'. Hãy vẽ một góc nhọn x'Oy' có O'x' // Ox, O'y' // Oy. Hãy đo xem hai góc xOy và x'O'y' có bằng nhau hay không ?