The discovery of the new drug is of great _______ for people suffering from heart problems.
A.similarity B.sympathy C.subscribe D.significance
This book gives a brief _______ of the history of the castle and details of the art collection in the main hall.
A.outline B.output C.operation D.organ
As we know, _______ of beauty change across time and cultural groups.
A.structures B.status C.statistics D.standards
These eighteen-century oil paintings are _______ so well that the visitors are greatly amazed.
A.preserved B.protested C.purchased D.punished
In the future, care for the environment will become very important as the earth's natural resources are _______.
A.pulling up B.running out
C.using up D.putting out
Each star on the flag of the United States _______ a state of this nation.
A.stands by B.stands out C.stands for D.stands up
