It is said that 30% of the apples here _______ from abroad while 80% of the rice _____ grown here．   
A．is; are B．a(chǎn)re; isC．a(chǎn)re; are D．is; is
B
考察主謂一致。分數(shù)及百分數(shù)作主語時謂語動詞的單復(fù)數(shù)根據(jù)其后面的名詞，后面的名詞是可數(shù)名詞復(fù)數(shù)，則謂語動詞使用復(fù)數(shù)；后面的名詞是不可數(shù)名詞，則謂語動詞用單數(shù)。本題第一空的apples是可數(shù)名詞復(fù)數(shù)，則謂語動詞用復(fù)數(shù)。第二空的rice是不可數(shù)名詞，則謂語動詞用單數(shù)。故B正確。
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