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miércoles, 15 de marzo de 2017

PAU 2011 2012 JUNE B

DIAMONDS

1. a) FALSE: "Optically, chemically... to a mine diamond"
b) TRUE: "As regards price, ...costs about $6,000"
2. a) Clark McEven is mentioned becuase he is the person who runs a company controlling the process of growing real diamonds.
C. McEven is  mentioned becuase he is in charge of a company which produces artificial diamonds.
b) They put a lot of pressure and heat on a carbon piece for some days.

3. a) overseen
b) lump
c) graded
d) inscripted

4. a) hardest / on
b) vanishes / leaving
c) was discovered / could
d) who / his

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DUE TO
WEDNESDAY, MARCH 22ND

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