Having lived in China for 8 years, Helen has a good _______ of both English and Chinese.
A．programB．guidanceC．commandD．a(chǎn)bility
C

試題分析：have a good command of sth.是固定用法，意思是對……運(yùn)用自如，故選C。
點(diǎn)評：固定詞組是學(xué)習(xí)語言的重要環(huán)節(jié)。要掌握好英語,記憶相當(dāng)數(shù)量的詞組是必不可少的。英語中的每一個(gè)詞組,不僅表達(dá)一定的概念,具有一定的詞匯意義,而且在語音、拼法、語法等方面都有自己的特點(diǎn)。在學(xué)生學(xué)習(xí)英語的過程中，單詞、詞組記憶是基礎(chǔ)。解答這類題目，關(guān)鍵是理解題干意思以及各選項(xiàng)詞組的意思，可以像數(shù)學(xué)中的代入法一樣，依次把各個(gè)選項(xiàng)意思放入句子中進(jìn)行比較，不難選出正確答案。
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