Mark the letter A, B, C, or D on your answer sheet to indicate the correct answer to the following question.
The mother ………. her cooking yet. The children are still hungry.
A.didn’t finish
B.don’t finish
C.hasn’t finished
D.haven't finished

Mark the letter A, B, C, or D on your answer sheet to indicate the correct answer to the following question.
My dog ………. her leg and she can’t go with the family on holiday.
 
A.breaks
B.broke
C.is breaking
D.has broken

Mark the letter A, B, C, or D on your answer sheet to indicate the correct answer to the following question.
Our advances in technology, ………. maternal health research allow us to help mothers.
A.also
B.as well
C.along with
D.within

Mark the letter A, B, C, or D on your answer sheet to indicate the correct answer to the following question.
………. Wednesday, every man and woman must vote at these booths.
A.before
B.although
C.Thanks to
D.contrary

Mark the letter A, B, C, or D on your answer sheet to indicate the correct answer to the following question.
………. to our help, my sister found a suitable job with high pay.
A.Contrary
B.Thanks
C.Own
D.By

Mark the letter A, B, C, or D on your answer sheet to indicate the correct answer to the following question.
The voting system was ………. to allow women.
A.along
B.canned
C.improved
D.also

Tập nghiệm của phương trình $ \dfrac{{{x}^{4}}-8{{x}^{2}}+7}{x-1}=0 $ là:
A. $ S=\left\{ -1\,;\,\sqrt{7} \right\} $
B. $ S=\left\{ -\sqrt{7}\,;\,-1\,;\,\sqrt{7} \right\} $
C. $ S=\left\{ 1\,;\,7 \right\} $
D. $ S=\left\{ -\sqrt{7}\,;\,-1\,;\,1\,;\sqrt{7} \right\} $

Viết mỗi số 0; 64; 343; 1 000 000 dưới dạng lập phương của một số tự nhiên, ta được kết quả tương ứng là
A. $ {{0}^{3}};\,\,{{4}^{3}};\,\,{{7}^{3}};\,\,{{100}^{3}}. $
B. $ {{0}^{3}};\,\,{{4}^{3}};\,\,{{7}^{3}};\,\,{{1000}^{3}}. $
C. $ {{0}^{3}};\,\,{{6}^{3}};\,\,{{7}^{3}};\,\,{{100}^{3}}. $
D. $ {{0}^{3}};\,\,{{4}^{3}};\,\,{{8}^{3}};\,\,{{100}^{3}}. $

Giá trị của biểu thức $ {{3}^{2}}{{.3}^{3}}+{{2}^{3}}{{.2}^{2}} $ là
A.275.
B.85.
C.125.
D.25.

Chọn kết quả sai.
Hiệu $ {{17}^{2}}-{{15}^{2}} $ được viết dưới dạng lũy thừa với số mũ lớn hơn 1 là
A.$ {{4}^{3}} $.
B.$ {{2}^{6}} $.
C.$ {{2}^{2}} $.
D.$ {{8}^{2}} $.