Diamonds have little ________ value and their price depends almost entirely on their scarcity.

A．intrinsic

B．eternal

C．subtle

D．inherent

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1 Doctors are interested in using lasers as a surgical tool in operations on people who are ________ to heart attack.

A．infectious

B．disposed

C．accessible

D．prone

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2 It is said in the passage that when the economy slides, ________.

A．men would choose working women as their marriage partners

B．more women would get married to seek financial security

C．even working women would worry about their marriages

D．more people would prefer to remain single for the time being

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3 Many countries have adopted systems of ________ education in order to promote the average level of education.

A．compulsory

B．cardinal

C．constrained

D．conventional

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