The temperature ______ takes place varies widely from material to material.
A.at which they melt
B.which melting
C.which they melt
D.at which melting

Not until Kentucky’s Mammoth Cave had been completely explored in 1972 _______.
A.when was its full extent realized
B.was its full extent realized
C.that its full extent was realized
D.the realization of its full extent

______, the less polluted the environment will be.
A.The fewer landfills we have
B.The more polluted landfills will be
C.The less landfills are polluted
D.The more landfills are there

The atmosphere of friendliness in Andalucia (A) is open, warm and gives a welcome feeling (B) to all who (C) have the good (D) fortune to visit there.
A.in Andalucia
B.gives a welcome feeling
C.who
D.the good

IX:
Choose the best answer among A, B, C, D to complete each sentence below:
Many species of plants and animals are in___________ of extinction.
A.dangerous
B.endangered
C.danger
D.dangerously

IX:
Choose the best answer among A, B, C, D to complete each sentence below:
He often talks to me about his____________ in the countryside.
A.childhood
B.childish
C.childlike
D.childless

IX:
Choose the best answer among A, B, C, D to complete each sentence below:
Nowadays women ___the same wages as men
A.should pay
B.will be paid
C.will pay
D.should be paid

Which of the following has the SAME meaning with “wealthy”?
A.strong
B.rich
C.clever
D.healthy

“He takes the responsibility for running the household”.
A.homework
B.homeland
C.housewife
D.housework

“A optimistic person always sees things on the bright sides."
A.comfortable
B.difficult
C.intelligent
D.pessimistic