Many firms give away small quantities of their productions as _______ so that people can try them before buying.
A．signsB．signalsC．examplesD．samples
D

試題分析：句意，許多公司贈送少量的他們公司生產(chǎn)的產(chǎn)品作為樣品，這樣人們在買之前就可以試用。Signs記號  signals信號examples例子samples樣品，根據(jù)題意，故選D。
點評：詞匯是學(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)量的詞匯是必不可少的。英語中的每一個單詞,不僅表達一定的概念,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。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詞組的意思，可以像數(shù)學(xué)中的代入法一樣，依次把各個選項意思放入句子中進行比較，不難選出正確答案。
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