Số lượng các vùng nông nghiệp hiện nay ở nước ta là
A.6.
B.4.
C.7.
D.2.

Mark the letter A, B, C, or D on your answer sheet to indicate the correct answer to the following question.
_______ Andew was very hard working, he hardly earned enough to feed his family.
 
A.Even if
B.Although
C.Because
D.In spite of

Mark the letter A, B, C, or D on your answer sheet to indicate the correct answer to the following question.
_________ Friday’s unpromising weather forecast, the manager is determined to take the team for an outing to Ridley Park.
A.For
B.Despite
C.Whether
D.Although

Mark the letter A, B, C, or D on your answer sheet to indicate the correct answer to the following question.
Any jackass can kick down a barn,_______it takes a good carpenter to build one.
A.but
B.that
C.so
D.for

Mark the letter A, B, C, or D on your answer sheet to indicate the correct answer to the following question.
The neighborhood had a memorial last weekend, _______ a family’s son had passed away.
 
A.as
B.so
C.and
D.for

Mark the letter A, B, C, or D on your answer sheet to indicate the correct answer to the following question.
The Sun,__________ is one of millions of stars in the universe, provides us with heat and light.
 
A.what
B.that
C.which
D.whose

Số nghiệm của hệ phương trình $ \left\{ \begin{array}{l} x+|y|=5 \\ 2x-|y|=4 \end{array} \right. $ là:
A.0
B.1
C.3
D.2

Hệ phương trình $ \left\{ \begin{array}{l} |x|-3\sqrt{2}y=12 \\ 2|x|-\sqrt{2}y=4 \end{array} \right. $ có bao nhiêu nghiệm?
A.Không có nghiệm
B.1 nghiệm
C.3 nghiệm
D.2 nghiệm

Mark the letter A, B, C, or D on your answer sheet to indicate the correct answer to the following question.
Henry thinks robots _____ take care of our houses in the future but he is not so sure.
A.might
B.will
C.are going to
D.could

Hệ phương trình $ \left\{ \begin{array}{l} x-3y=1 \\ 2{{x}^{2}}+{{y}^{2}}-xy+x-2y=31 \end{array} \right. $ với $ x < 0 $ có nghiệm $ ({{x}_{o}};{{y}_{o}}) $ .
Tính $ {{x}_{o}}-2{{y}_{o}} $ .
A. $ -\dfrac{1}{4} $
B. $ -\dfrac{31}{4} $
C. $ -\dfrac{5}{2} $
D. $ -\dfrac{3}{4} $