英語四級備考路上，選詞填空作為檢驗詞匯精準度與語境理解力的關鍵環(huán)節(jié)，是每位考生不可忽視的試煉場。通過這一題型，我們不僅能鞏固詞匯基礎，更能提升在復雜語境中靈活運用的能力。以下，我們以“化學物質污染”為英語四級選詞填空真題示例，深入探討這種練習在備考過程中的獨特價值。
英文原文
Timothy, a 54-year-old Alaskan fisherman, used to think he was safe from industrial pollutants at his home in Haines, a town with a population of 2,400 people and 4,000 eagles, with 8 million acres of protected wildland nearby. But in early 2021, Timothy agreed to take part in a biomonitoring project, in which people’s blood and urine were tested for ______ of chemicals. In this case, three potentially dangerous classes of compounds were found in common household items like face cream, tin cans, and shower curtains. The results, published in November in a report called “Is It in Us?” by an environmental group, were rather worrying. Everyone of the participants, ______ an Illinois state senator to a Massachusetts minister, tested positive for all three classes of pollutants. While the ______ presence of these chemicals does not necessarily indicate a health risk, the fact that typical Americans carry these chemicals at all shocked Timothy and his fellow participants.
選詞選項
A. traces
B. range
C. belong
D. demonstrated
E. excess
F. extending
G. habitually
H. necessarily
I. products
J. from
K. released
文章概要
本文講述了一位阿拉斯加漁民Timothy參與一項生物監(jiān)測項目，該項目檢測了參與者的血液和尿液中的化學物質。結果令人擔憂，所有參與者都被檢測出含有三種潛在有害的家庭用品中的化學物質。盡管這些化學物質的微量存在不一定會造成健康風險，但它們的普遍存在還是震驚了所有參與者。
填空及答案解析
填空位置：people’s blood and urine were tested for ______ of chemicals.
答案：I. products
解析：此處需要填入的詞應該與“chemicals”相關，并且能表示這些化學物質來源于哪里。根據(jù)語境，這些化學物質來源于日常用品，因此“products”是最合適的選項。
填空位置：Everyone of the participants, ______ an Illinois state senator to a Massachusetts minister, tested positive for all three classes of pollutants.
答案：J. from
解析：此句需要一個介詞來連接“an Illinois state senator”和“a Massachusetts minister”，表示參與者的范圍從某一位到另一位。根據(jù)語境，“from...to...”表示范圍，是合適的選項。
填空位置：While the ______ presence of these chemicals does not necessarily indicate a health risk...
答案：E. excess
解析：此句需要描述這些化學物質的存在狀態(tài)，并且這種狀態(tài)與“不一定會造成健康風險”相對照。根據(jù)語境，“excess”表示過量，但此處并非指真正的過量，而是強調它們的存在狀態(tài)，故為合適選項。
通過以上解析，可以看出英語四級選詞填空不僅考察詞匯知識，還涉及對文章整體內容的理解和邏輯推理能力。希望這個示例能夠幫助你更好地準備英語四級考試。
