11．The UN helps protect human rights and works _____ international laws．（　　）
A．improveB．to improveC．improvingD．improved

分析 聯(lián)合國幫助保護人權(quán)并發(fā)揮改善國際法的作用．

解答 答案：B
句中and連接并列謂語helps和works；improve表示work的目的，在句中作目的狀語．故選B．

點評 動詞不定式是非謂語動詞是一種，表示未發(fā)生的動作，用法較多．常用來作定語，主語，賓語，補語，狀語等．本題中用來作目的狀語，相當(dāng)于in order to為了．

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