单项选择题
If you（）bright sunlight（）dry wood with a glass, it will start burning.
A.expose；to
B.concentrate；on
C.aim；at
D.focus；on
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When he was a young boy, a serious disease deprived him of the（）of hearing.
A.organ
B.possession
C.conduct
D.faculty -
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Stamping on any country's national flag is an（）to its people.
A.inflation
B.ingredient
C.insult
D.invasion -
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I am afraid that you have to alter your（）views in light of the tragic news that has just arrived.
A.indifferent
B.distressing
C.optimistic
D.pessimistic
