Phèn chua được dùng trong ngành công nghiệp thuộc da, công nghiệp giấy, chất cầm màu trong ngành nhuộm vải, chất làm trong nước. Công thức hoá học của phèn chua là
A.\({(N{H_4})_2}S{O_4}.A{l_2}{(S{O_4})_3}.24{H_2}O\).
B.\(L{i_2}S{O_4}.A{l_2}{\left( {S{O_4}} \right)_3}.24{H_2}O\).
C.\({K_2}S{O_4}.A{l_2}{(S{O_4})_3}.24{H_2}O\).
D.\(N{a_2}S{O_4}.A{l_2}{(S{O_4})_3}.24{H_2}O\).

Cho các chất: Ba, Zn, Al, \(A{l_2}{O_3}\). Chất tác dụng được với dung dịch NaOH là:
A.Ba, Al, Zn.
B.Al, Zn, \(A{l_2}{O_3}\).
C.Zn, Al.
D.Ba, Al, Zn, \(A{l_2}{O_3}\).

Choose the answer A, B, C or D to indicate the word(s) OPPOSITE in meaning to the underlined word(s) in the following sentence
Many young boys are addicted to computer games and play them day and night.
A.dependent on
B.hooked on
C.indifferent to
D.exhausted by

Mark the letter A, B, C, or D on your answer sheet to indicate the correct answer to the following question.
On some TV channels, a(n) ___________ tells to you what the next program is going to be on air.
A.producer
B.commentator
C.announcer
D.journalist

Mark the letter A, B, C, or D on your answer sheet to indicate the correct answer to the following question.
The _________________ applauded for nearly three minutes after she had left the stage.
A.journalists
B.actresses
C.audience
D.editors

Mark the letter A, B, C or D to indicate the word(s) CLOSEST in meaning to the underlined word(s) in the following question
I think using social media make you become obsessed with the private lives of other people.
A.uninterested
B.bad
C.too interested
D.neglected

Điền nội dung còn thiếu vào bảng:
Số bị chia
25460
44400
58011
Số chia
2
4
3
Thương
A.12730
B.11100
C.19337
D.

Mark the letter A, B, C or D to indicate the word(s) CLOSEST in meaning to the underlined word(s) in the following question
Despite several benefits that the mass media bring to us, we should limit our time with them and spend more time with their family.
 
A.amounts
B.features
C.advantages
D.points

Mark the letter A, B, C, or D on your answer sheet to indicate the correct answer to the following question.
The average _____________ watches television for about 15 hours a week.
A.observer
B.audience
C.spectator
D.viewer

Tính nhẩm:
 
45000 : 9 =
A.5000
B.
C.
D.