Gọi $ {{x}_{0}} $ là nghiệm dương nhỏ nhất của phương trình $ 3si{{n}^{2}}x+2\sin x\cos x-co{{s}^{2}}x=0 $ . Chọn khẳng định đúng?
A. $ {{x}_{0}}\in \left( \pi ;\dfrac{3\pi }{2} \right) $ .
B. $ {{x}_{0}}\in \left( \dfrac{3\pi }{2};2\pi \right) $ .
C. $ {{x}_{0}}\in \left( \dfrac{\pi }{2};\pi \right) $ .
D. $ {{x}_{0}}\in \left( 0;\dfrac{\pi }{2} \right) $ .

Choose the answer among A, B, C, D to complete each of the sentences below:
He was pulled off an extraordinary ______ in completing the voyage single-handedly.
A.feast
B.fervour
C.feat
D.feature

Mark the letter A, B, C or D on your answer sheet to indicate the correct answer to each of the following questions.
 
It was so relaxing to be ________ old friends.
A.around
B.among
C.in
D.between

Choose the answer among A, B, C, D to complete each of the sentences below:
Oil, coal and natural gas are ______ fuels made from decayed material from animal or plants.
A.fossil
B.smokeless
C.unleaded
D.solid

Choose the answer among A, B, C, D to complete each of the sentences below:
In Britain and America, it is ______ for everybody to sing 'Auld Lang Syne' on New Year's Eve.
A.tradition
B.traditionalism
C.traditional
D.traditionally

Choose the answer among A, B, C, D to complete each of the sentences below:
I don't know the title but I recognize the _____ of this song.
A.tune
B.sound
C.theme
D.rhyme

Choose the answer among A, B, C, D to complete each of the sentences below:
I'd rather go to the football field ______ being at home today.
A.inspite of
B.because of
C.instead of
D.due to

Choose the answer among A, B, C, D to complete each of the sentences below:
Man has witnessed a great many significant ______ of science and technology in the past few decades.
A.achieves
B.achievers
C.achieved
D.achievements

Choose the answer among A, B, C, D to complete each of the sentences below:
They ________ a close friendship at university.
A.created
B.became
C.formed
D.promoted

Choose the answer among A, B, C, D to complete each of the sentences below:
I'm ________ a surprise party for my sister.
A.providing
B.serving
C.taking
D.organizing