Do remember to be________. We must avoid any possible risks when doing this dangerous chemical experiment—burns, poisonous gases or cuts from broken tubes.
A．curious B．thoughtfulC．considerate D．cautious
D

試題分析：考察形容詞詞義辨析。A好奇的；B體貼的；C考慮周到的；D謹(jǐn)慎的；句意：一定要記住要謹(jǐn)慎，當(dāng)我們在做危險(xiǎn)的化學(xué)實(shí)驗(yàn)的時(shí)候，我們必須避免任何可能的危險(xiǎn)—燙傷，有毒的氣體或者被壞了的試管割傷。故D正確。
點(diǎn)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(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。
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