A.bus
B.bury
C.up
D.cut

Let’s help the lady next door do the household chores,______?
A.will I
B.don’t I
C.may I
D.shall we

Tính đạo hàm của hàm số \(y = \ln \left( {\sqrt x  + 1} \right)\).
A.\(\dfrac{{\sqrt x }}{{\sqrt x  + 1}}\)
B.\(\dfrac{1}{{\sqrt x  + 1}}\)
C.\(\dfrac{1}{{x + \sqrt x }}\)
D.\(\dfrac{1}{{2x + 2\sqrt x }}\)

\(b = 147.247.347 - 13\)
A.Số nguyên tố
B.Hợp số
C.Không là số nguyên tố cũng không là hợp số
D.

(2) ________
A.achievements
B.efforts
C.contributions
D.dedications

Trong hệ trục tọa độ \(Oxy\), cho vecto \(\vec a = \left( {5;\,\,6} \right)\); \(\overrightarrow b  = \left( { - 4;\,\,2} \right)\). Tìm tọa độ của vecto \(\vec u = 3\vec a - 2\vec b\).
A.\(\vec u = \left( {23;\,\,14} \right)\)
B.\(\vec u = \left( {24;\,\,13} \right)\)
C.\(\vec u = \left( {14;\,\,23} \right)\)     
D.\(\vec u = \left( {12;\,\,23} \right)\)

She hasn't eaten anything since yesterday. She_____ be really hungry.
A.might
B.will
C.must
D.can’t

Traditional costumes of the ethnic groups are still kept, which results from the development of culture preservation projects.
A.But for the development of culture preservation projects, traditional costumes of the ethnic groups would be still kept.
B.Without the development of culture preservation projects, traditional costumes of the ethnic groups wouldn't be still kept.
C.If there is no development of culture preservation projects, traditional costumes of the ethnic groups will be still kept.
D.If there was no development of culture preservation projects, traditional costumes of the ethnic groups would be still kept.

Which was NOT cited as one of the bad sides of Black Friday?
A.There are large crowds and lots of shoving.
B.Sometimes violence occurs at Black Friday events.
C.Stores run out of high demand items quickly.
D.Nobody really saves any money on Black Friday.

A.chorus
B.children
C.changeable
D.chore