Cho dãy các ion: $ F{{\text{e}}^{2+}},C{{a}^{+}},Z{{n}^{2+}} $ , $ C{{O}_{3}}^{2-} $ , $ {{H}_{2}}P{{O}_{4}}^{-} $ , $ {{S}^{2-}} $ . Số ion đơn nguyên tử trong dãy là
A.5
B.2
C.3
D.4

Tên gọi của ion $ C{{l}^{-}} $là
 
A.cation clo.
B.anion clorua.
C.cation clorua.
D.anion clo.

Mark the letter A, B, C, or D on your answer sheet to indicate the correct answer to the following question.
Earbuds are small enough for you to put ………. your pocket.
A.up
B.on
C.in
D.under

I’m tired ………. watching television; let’s go for a walk.
A.in
B.of
C.with
D.at

Kim loại nào sau đây tan tốt trong nước dư ở điều kiện thường?
A.Be.
B.Na.
C.Al.
D.Mg.

Mark the letter A, B, C, or D on your answer sheet to indicate the correct answer to the following question.
_________ is a device sent up into space to travel around the earth used for collecting information or communicating by radio, television, etc.
A.Spaceship
B.Telescope
C.Satellite
D.Antenna

Mark the letter A, B, C, or D on your answer sheet to indicate the correct answer to the following question.
What is this device used ……….?
A.at
B.in
C.to
D.for

Mark the letter A, B, C, or D on your answer sheet to indicate the correct answer to the following question.
________ a piece of rock or other matter from space that has landed on Earth.
A.Star
B.Stone
C.Meteorite
D.Galaxy

Mark the letter A, B, C, or D on your answer sheet to indicate the correct answer to the following question.
____________ is one of the large, independent groups of stars in the universe.
A.Moon
B.Galaxy
C.Earth
D.Space station

Mark the letter A, B, C, or D on your answer sheet to indicate the correct answer to the following question.
The purpose of the Ig Nobel Prize is to celebrate the unusual and ………. achievements.
A.imagine
B.imaginatively
C.imagination
D.imaginative