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.increase
C.decline
D.raise

Choose the answer among A, B, C, D to complete each of the sentences below:
In spite of all its ______, medical science knows little about the brain.
A.advances
B.advents
C.advantages
D.approaches

Choose the answer among A, B, C, D to complete each of the sentences below:
I felt my face burning with ________.
A.confidence
B.enthusiasm
C.embarrassment
D.pleasure

Choose the answer among A, B, C, D to complete each of the sentences below:
Many newer cars have a much lower fuel ______.
A.consumer
B.consuming
C.consumation
D.consumption

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.up
B.on
C.into
D.in

Choose the answer among A, B, C, D to complete each of the sentences below:
If you want to send a document and do not want to lose, its original shape, our _____ service will help you.
A.messenger call
B.express mail
C.postal
D.facsimile

Choose the answer among A, B, C, D to complete each of the sentences below:
The Great Wall is China's most popular ______.
A.contribution
B.construction
C.attraction
D.impression

Choose the answer among A, B, C, D to complete each of the sentences below:
They're having a party in _______ of his 84th birthday.
A.ceremony
B.honor
C.memory
D.celebration

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.smokeless
B.fossil
C.unleaded
D.solid

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