Có các tính chất hóa học sau:
(1) Tác dụng với khí clo khi chiếu sáng.
(2) Tham gia phản ứng cháy.
(3) Tham gia phản ứng cộng.
(4) Tham gia phản ứng trùng hợp.
Các tính chất hóa học của $ {{C}_{2}}{{H}_{4}} $ là
A.(2), (3).
B.(3), (4).
C.(2), (3), (4).
D.(1), (2).

Mark the letter A, B, C, or D on your answer sheet to indicate the correct answer to the following question.
I am expecting .......... my idol again.
A.meet
B.to meet
C.to meeting
D.meeting

Mark the letter A, B, C, or D on your answer sheet to indicate the correct answer to the following question.
We intend .......... The Leaning Tower of Pisa next month.
A.visiting
B.will visit
C.to visit
D.visit

Mark the letter A, B, C, or D on your answer sheet to indicate the correct answer to the following question.
She is talented enough .......... bright like a star.
A.shine
B.to shine
C.shining
D.to shining

Mark the letter A, B, C, or D on your answer sheet to indicate the correct answer to the following question.
He seems .......... a lot, but he didn’t succeed.
A.to trying
B.to try
C.of trying
D.try

Ứng dụng nào sau đây không phải ứng dụng của etilen?
A.Dùng để ủ trái cây mau chín.
B.Điều chế khí gas.
C.Điều chế P. E.
D.Điều chế rượu etylic và axit axetic.

Mark the letter A, B, C, or D on your answer sheet to indicate the correct answer to the following question.
Michael Jackson started in the music business ………. age 11 as a member of the Jackson 5.
A.in
B.at
C.with
D.of

Mark the letter A, B, C, or D on your answer sheet to indicate the correct answer to the following question.
Let me .......... you how to play this flute.
A.explain
B.to explain
C.to explaining
D.explaining

Mark the letter A, B, C, or D on your answer sheet to indicate the correct answer to the following question.
The Idol format became a worldwide phenomenon ………. local versions in many countries and territories
A.within
B.with
C.by
D.in

Phương trình hóa học nào sau đây không đúng?
A.$ C{{H}_{4}}+C{{l}_{2}}\xrightarrow{anh\,\,sang}C{{H}_{3}}Cl+HCl .$
B.$ C{{H}_{2}}=CH-C{{H}_{3}}+{{H}_{2}}\to C{{H}_{3}}-C{{H}_{2}}-C{{H}_{3}} .$
C.$ C{{H}_{2}}=C{{H}_{2}}+B{{r}_{2}}\to C{{H}_{3}}-CHB{{r}_{2}} .$
D. $ ...+C{{H}_{2}}=C{{H}_{2}}+C{{H}_{2}}=C{{H}_{2}}+...\to ...-C{{H}_{2}}-C{{H}_{2}}-C{{H}_{2}}-C{{H}_{2}}-... $