Cho các sơ đồ phản ứng sau:

A → H 2 S O 4 , 170 ° C B + C   ; B + 2 H 2 → N i ,    t ° a n c o l    i s o b u t y l i c ; A + C u O → t ° D + E + C   ; D + 4 A g N O 3 + N H 3 → t ° F + G + 4 Ag

A có công thức cấu tạo là:

A.  ( C H ₃ ) 2 C ( O H ) - C H O .

B.  H O C H 2 C H ( C H 3 ) C H O .

C.  O H C - C H ( C H 3 ) - C H O .

D.  C H 3 C H ( O H ) C H 2 C H O .

Mark the letter A, B, C or D on your answer sheet to indicate the sentence that is CLOSEST in meaning to the sentence given in each of the following questions.
“Absence makes the heart grow fonder”.

A. Being apart from someone you love makes you love them more.

B.  Our heart needs absence to grow.

C.  Being apart from someone you love makes you love them less.

D.  Absence makes us grow older.

Read the following passage and mark the letter A, B, C, or D on your answer sheet to indicate the correct word for each of the blanks from 35 to 44. Fill in the appropriate word in question 37

(35) ….. educational specialists believe that early schooling should provide children (36)
….. an awareness of their own abilities (37) ….. the self – confidence (38) ….. their abilities. One approach recognized by many experts (39) ….. promoting these qualities is the Montessori method, first practiced by Maria Montessori of Italy (40) ….. the early 1900s. Nancy McCormick Rambusch is credited with (41) ….. the method in the United States, where today (42) ….. over 400 Montessori schools.

The method helps children (43) ….. for themselves by providing them with instructional materials and tasks that facilitate acts of discovery and manipulation. Through such exploration, children develop their sense of touch and learn (44) ….. do everyday tasks without adult assistance. Other benefits include improvement in language skills, and acquaintance with elements of science, music, and art.

A. but

B. and

C. with

D. together

Mark the letter A, B, C or D on your answer sheet to indicate the word or phrase that is CLOSEST in meaning to the underlined part in each of the following questions

What do you like doing in your spare time?

A. enjoyable

B. free

C. quiet

D. busy

Muốn tăng cường sức chống bệnh, chống rét và chịu hạn cho cây người ta dùng loại phân bón nào?

A. NH₄Cl

B. Amophot

C. KCl

D. Supephotphat