Chọn cách viết đúng của số $ 20\dfrac{15}{1000} $ là
A.20,015.
B.20,15.
C.0,2015.
D.2015.

Các câu sau đúng hay sai?
Cho số thập phân 102,78
Phần nguyên là số lớn hơn 100
Đúng
Sai
Phần thập phân là số chia hết cho 4
Đúng
Sai
A.1
B.0
C.
D.

Phần nguyên của số thập phân 10,103 là
A.10103.
B.103.
C.10.
D.301.

Mark the letter A, B, C, or D on your answer sheet to indicate the correct answer to the following question.
………. dictionaries are now common in English classes.
A.Electronics
B.Electricity
C.Electronically
D.Electronic

Mark the letter A, B, C, or D on your answer sheet to indicate the correct answer to the following question.
Since the appearance of electronic devices, lessons have become more and more ………. and effective.
 
A.enjoy
B.enjoyment
C.enjoying
D.enjoyable

Mark the letter A, B, C, or D on your answer sheet to indicate the correct answer to the following question.
Laptops are ………. learning tools.
A.excellent
B.excellence
C.excellently
D.excel

Mark the letter A, B, C, or D on your answer sheet to indicate the correct answer to the following question.
My laptop, _____ is a present from my parents, is very useful.
A.which
B.who
C.that
D.whose

Mark the letter A, B, C, or D on your answer sheet to indicate the correct answer to the following question.
I am preparing ………. a class discussion on personal electronic devices.
A.at
B.into
C.for
D.about

Mark the letter A, B, C, or D on your answer sheet to indicate the correct answer to the following question.
Some people support the view that .......... electronic devices may bring more harm than good to students.
A.personally
B.personal
C.person
D.personalize

Mark the letter A, B, C, or D on your answer sheet to indicate the correct answer to the following question.
You can use laptops to do ……….
A.calculative
B.calculate
C.calculator
D.calculations