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

Choose the answer among A, B, C, D to complete each of the sentences below:
The use of computer aids in teaching, ______ the role of teachers is still very important.
A.unless
B.despite
C.whereas
D.yet

Choose the answer among A, B, C, D to complete each of the sentences below:
Jane is a very sociable girl. She likes parties and ______.
A.rituals
B.traditions
C.ceremonies
D.celebrations

Choose the answer among A, B, C, D to complete each of the sentences below:
Scientists say that the main reason ______ population explosion is an increase in birth rates.
A.in
B.for
C.of
D.to

Choose the answer among A, B, C, D to complete each of the sentences below:
Jane is going to go abroad next month and she's having a ________ party on Sunday.
A.wedding
B.anniversary
C.farewell
D.birthday

Choose the answer among A, B, C, D to complete each of the sentences below:
We may win, we may lose - it's just the _____ of the draw.
A.strike
B.chance
C.odds
D.luck

Choose the answer among A, B, C, D to complete each of the sentences below:
The family chose cremation rather than ______.
A.funeral
B.embalmment
C.burning
D.burial

Choose the answer among A, B, C, D to complete each of the sentences below:
My brother takes photograph _____ a hobby.
A.as
B.in
C.with
D.for

Tương quan giữa số người chết trong năm so với số dân trung bình cùng thời điểm được gọi là
A.tỉ suất sinh thô.
B.tỉ suất gia tăng cơ học.
C.tỉ suất tử thô.
D.tỉ suất gia tăng tự nhiên.