[单选题] Why weren’t you at the meeting? —I ________ for a longdistance call from my aunt in America、

1、[单选题]________ with the size of the whole earth, the biggest ocean doesn’t seem big at all.

• A、pare
• B、When paring
• C、paring
• D、When pared

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2、[单选题]Linda worked for the Minnesota Manufacturing and Mining pany, ________ as 3M.

• A、knowing
• B、known
• C、being known
• D、to be known

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3、[单选题]My advisor encouraged ________ a summer course to improve my writing skills.

• A、for me taking
• B、me taking
• C、for me to take
• D、me to take

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4、[单选题]The flu is believed ________ by viruses that like to reproduce in the cells inside the human nose and throat.

• A、cause
• B、being caused
• C、to be caused
• D、to have caused

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5、[单选题]When flint ________ to the market, these products enjoyed great success.

• A、introducing
• B、introduced
• C、introduce
• D、being introduced

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