Số điểm biểu diễn nghiệm của phương trình $ {{\cos }^{2}}x-\sqrt{3}\sin 2x=1+{{\sin }^{2}}x $ trên vòng tròn lượng giác ?
A.1
B.4
C.2
D.3

Choose the answer among A, B, C, D to complete each of the sentences below:
All fossil fuels are ______ resources that cannot be replaced after use.
A.available
B.renewable
C.non-renewable
D.unlimited

Choose the answer among A, B, C, D to complete each of the sentences below:
The work of the charity is funded by voluntary ______.
A.teenagers
B.movements
C.donations
D.campaigns

Choose the answer among A, B, C, D to complete each of the sentences below:
Watching television is by far the most popular ______.
A.occupation
B.passion
C.recreation
D.intensity

Choose the answer among A, B, C, D to complete each of the sentences below:
The structure ______ of approximately 2 million blocks of stone, each weighing about 2. 5 tons.
A.contained
B.combined
C.consisted
D.included

Choose the answer among A, B, C, D to complete each of the sentences below:
We _____ to several sports channels on television.
A.offer
B.subscribe
C.deliver
D.notify

Choose the answer among A, B, C, D to complete each of the sentences below:
The Vietnam Society of Learning Promotion started a campaign ______ illiteracy eradication.
A.in
B.for
C.of
D.on

Choose the answer among A, B, C, D to complete each of the sentences below:
He built _____ his collection over a period of ten years.
A.in
B.on
C.up
D.into

Choose the answer among A, B, C, D to complete each of the sentences below:
He has...... extensive research into renewable energy sources.
A.cared for
B.carried out
C.turned on
D.taken over

Choose the answer among A, B, C, D to complete each of the sentences below:
Pressure on natural resourses will _______ as we face a population explosion.
A.decrease
B.raise
C.decline
D.increase