英语四级备考路上，选词填空作为检验词汇精准度与语境理解力的关键环节，是每位考生不可忽视的试炼场。通过这一题型，我们不仅能巩固词汇基础，更能提升在复杂语境中灵活运用的能力。以下，我们以“环境与健康”为英语四级选词填空真题示例，深入探讨这种练习在备考过程中的独特价值。

原文

As an Alaskan fisherman, Timothy June, 54, used to think that 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, June agreed to take part in a ______ of 35 Americans from seven states. It was a biomonitoring project, in which people’s blood and urine were tested for ______ of chemicals—in this case, three potentially dangerous classes of compounds found in common household ______ like face cream, tin cans, and shower curtains. The results, ______ in November in a report called “Is It in Us?” by an environmental group, were rather worrying. Everyone of the participants, ______ from an Illinois state senator to a Massachusetts minister, tested positive for all three classes of pollutants. And while the ______ presence of these chemicals does not necessarily indicate a health risk, the fact that typical Americans carry these chemicals at all ______ June and his fellow participants. Clearly, there are chemicals in our bodies that don’t belong there.

Ongoing studies conducted by the Centers for Disease Control and Prevention have found 148 chemicals in Americans of all ages. And in 2021, the Environmental Working Group found an ______ of 200 chemicals in the blood of 10 newborns. “Our babies are being born pre-polluted,” says Sharyle Patton of Commonweal, which cosponsored “Is It in Us?” “This is going to be the next big environmental issue after climate change.”

文章概要

本文讨论了一项关于美国人体内化学物质污染的生物监测项目，揭示了日常生活中常见污染物对人体健康的潜在影响。文章还提到了一项由环境工作组进行的研究，发现新生儿血液中已存在多种化学物质，进一步强调了环境污染的严重性。

选词选项

A. analyses
B. average
C. belong
D. demonstrated
E. excess
F. extending
G. habitually
H. necessarily
I. products
J. ranging
K. released
L. shocked
M. simple
N. survey
O. traces

答案解析

N (survey) - 指一项对35名来自七个州的美国人的调查。

O (traces) - 指在血液和尿液中检测到的化学物质的痕迹。

I (products) - 指常见家庭产品，如面霜、锡罐和淋浴帘。

K (released) - 指研究结果在11月被公布。

J (ranging) - 表示参与者的范围，从伊利诺伊州的州参议员到马萨诸塞州的牧师。

M (simple) - 修饰“presence”，表示这些化学物质的存在并不简单。

H (necessarily) - 修饰“indicate”，表示这些化学物质的存在并不一定表明健康风险。

L (shocked) - 描述June和他的同伴们对这些结果的反应。

C (belong) - 表示这些化学物质不属于我们体内。

B (average) - 表示在新生儿血液中发现平均有200种化学物质。

通过以上解析，可以看出英语四级选词填空不仅考察词汇知识，还涉及对文章整体内容的理解和逻辑推理能力。希望这个示例能够帮助你更好地准备英语四级考试。