Many firms give away small quantities of their productions as _______ so that people can try them before buying.

A．signsB．signalsC．examplesD．samples

D

解析試題分析：句意，許多公司贈(zèng)送少量的他們公司生產(chǎn)的產(chǎn)品作為樣品，這樣人們?cè)谫I之前就可以試用。Signs記號(hào)  signals信號(hào)examples例子samples樣品，根據(jù)題意，故選D。
考點(diǎn)：考查詞匯的辨析
點(diǎn)評(píng)：詞匯是學(xué)習(xí)語(yǔ)言的重要環(huán)節(jié)。要掌握好英語(yǔ),記憶相當(dāng)數(shù)量的詞匯是必不可少的。英語(yǔ)中的每一個(gè)單詞,不僅表達(dá)一定的概念,具有一定的詞匯意義,而且在語(yǔ)音、拼法、語(yǔ)法等方面都有自己的特點(diǎn)。在學(xué)生學(xué)習(xí)英語(yǔ)的過(guò)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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