Question

Most experts agree that human activities such as the clearing of large areas of forests, and farming on a large scale _________ the problem of global warming.

A．is leading to

B．is resulting in

C．a(chǎn)re contributing to

D．a(chǎn)re owing to

Answer 1

C

試題分析：考察主謂一致和詞義辨析。Activities 是從句的主語，所以選C和D; 按句子意思應(yīng)選詞義為“導(dǎo)致”的選項(xiàng)contribute to.故C正確。
點(diǎn)評：在英語中，句子的主語和謂語動詞要保持?jǐn)?shù)上的一致關(guān)系，叫主謂一致。這種關(guān)系通常要遵循下面三條原則：1．語法一致原則。句子的主語是單數(shù)形式，謂語動詞要用單數(shù)形式；主語是復(fù)數(shù)形式，謂語動詞用復(fù)數(shù)形式2．意義一致原則即謂語動詞該用單數(shù)還是復(fù)數(shù)取決于主語所表達(dá)的內(nèi)容在含義是單數(shù)意義還是復(fù)數(shù)意義。3．鄰近原則謂語動詞該用單數(shù)還是復(fù)數(shù)形式，取決于最鄰近它的名詞、代詞或其它詞的數(shù)。