题目
Part 5: 看句子,选出高亮单词的英文释义Scientists have found that water is not an effective underline(shield) against the sun's more harmful rays.A. n. sth. that protects sb. or sth. from being hurt or damagedB. n. a particular type of solid, liquid, or gasC. n. a material or covering that electricity, heat, or sound cannot go through
Part 5: 看句子,选出高亮单词的英文释义
Scientists have found that water is not an effective $\underline{shield}$ against the sun's more harmful rays.
A. n. sth. that protects sb. or sth. from being hurt or damaged
B. n. a particular type of solid, liquid, or gas
C. n. a material or covering that electricity, heat, or sound cannot go through
题目解答
答案
A. n. sth. that protects sb. or sth. from being hurt or damaged
解析
考查要点:本题主要考查学生对单词"shield"在具体语境中的语义理解能力,以及根据上下文选择恰当释义的推理能力。
解题核心思路:
- 定位核心语境:句子中"water is not an effective shield against the sun's harmful rays"表明"shield"在此处指代一种保护性功能(阻挡有害射线)。
- 排除干扰项:选项B(物质类型)和C(物理阻隔特性)需结合语境判断是否符合。
- 关键逻辑:"effective shield"强调"保护效果",而非物质属性或物理特性。
选项分析
选项A
"保护某人或某物免受伤害或损害的东西"
- 语境匹配:句子中"shield"的作用是阻挡太阳有害射线,直接对应"保护...免受损害"的定义。
- 逻辑关系:科学家发现水无法有效发挥这种保护作用,与选项A的保护功能高度一致。
选项B
"固体、液体或气体的一种类型"
- 语境矛盾:虽然水是液体,但"shield"在此处描述的是功能(保护),而非物质分类。
- 排除理由:选项B未体现"阻挡有害射线"的核心语义。
选项C
"阻止电、热或声音通过的材料"
- 部分相关性:水确实具有物理阻隔特性,但句子强调的是保护性功能(阻挡有害射线),而非具体物理属性。
- 关键差异:选项C的范围(电、热、声)与语境中的"太阳有害射线"不完全对应。