Trong công nghiệp, nhôm được điều chế bằng phương pháp
A.dùng khí CO khử $ A{{l}_{2}}{{O}_{3}} $ ở nhiệt độ cao.
B.điện phân nóng chảy $ A{{l}_{2}}{{O}_{3}} $ có mặt criolit.
C.điện phân dung dịch $ AlC{{l}_{3}}. $
D.điện phân nóng chảy $ AlC{{l}_{3}}. $

Nhôm thể hiện tính chất nào sau đây ?
1) Nhôm là kim loại nhẹ.
2) Là kim loại màu trắng bạc, mềm, dễ kéo sợi và dát mỏng.
3) Nhôm dẫn điện và dẫn nhiệt tốt.
4) Nhôm nóng chảy ở nhiệt độ \({660^o}C\).
A.1, 3, 4.
B.1, 2, 3, 4.
C.1, 2, 3.
D.1, 2, 4.

Mark the letter A, B, C, or D on your answer sheet to indicate the correct answer to each of the following questions.
We are late because we got stuck in ___________traffic jam.
A.an
B.none
C.the
D.a

Mark the letter A, B, C, or D on your answer sheet to indicate the correct answer to each of the following questions.
______ games that we like best are ______ tennis and football.
A.No article/ the
B.0/ 0
C.The/ the
D.The/ 0

Mark the letter A, B, C or D on your answer sheet to indicate the correct answer to each of the following questions.
My brother hopes to travel around the world ____ next summer.
A.ø (no article)
B.a
C.the
D.an

Mark the letter A, B, C, or D on your answer sheet to indicate the correct answer to each of the following questions.
Her mother is _____ nurse. She works at ____ large hospital.
A.the/the
B.a/a
C.a/the
D.the/a

Mark the letter A, B, C, or D on your answer sheet to indicate the correct answer to the following question.
More and more investors are pouring ___ money into food and beverage start-ups.
A.an
B.Ø
C.the
D.a

Mark the letter A, B, C or D on your answer sheet to indicate the correct answer to each of the following questions.
According to ________National Weather Service, ________cyclones are ________areas of circulating winds that rotate counterclockwise in ________Northern Hemisphere and clockwise in______ Southern Hemisphere.
A.the/ø/ø/the/the
B.the/ø/the/ø/ø
C.ø/ø/the/the/the
D.the/ø/ø/an/the

Mark the letter A, B, C, or D on your answer sheet to indicate the correct answer to each of the following questions.
I rarely listen to_______  music on_______ radio.
A.the/a
B.a/X
C.a/the
D.X/the

Mark the letter A, B, C, or D on your answer sheet to indicate the correct answer to each of the following questions.
"Where did you have ______ lunch?" -"We went to ______ Japnanese restaurant."
A.Ø - a
B.Ø- the
C.a - a
D.a - Ø