题目
Why were early radio broadcasts heard by such a small audienceA. Few people owned the necessary equipment.B. The music selection was not very popular.C. Few ships came into New York harbor.D. The radio signal was too weak to reach a mass audience.
Why were early radio broadcasts heard by such a small audience
A. Few people owned the necessary equipment.
B. The music selection was not very popular.
C. Few ships came into New York harbor.
D. The radio signal was too weak to reach a mass audience.
题目解答
答案
A. Few people owned the necessary equipment.
解析
考查要点：本题主要考查对早期无线电广播传播特点的理解，需要结合历史背景分析听众数量少的原因。
解题核心思路：
- 明确问题核心：题目问的是“为什么早期无线电广播的听众数量少”，需从传播技术和接收条件两方面分析。
- 排除干扰项：需区分“技术限制”与“内容偏好”的区别，抓住“设备普及度”这一关键因素。
- 历史背景知识：早期无线电接收设备昂贵且技术复杂，普及率低是核心原因。
破题关键点：
- 设备普及度是决定听众数量的直接因素，而非信号强度或内容选择。
选项分析：
- A. Few people owned the necessary equipment
正确。早期无线电接收设备（如晶体收音机）价格昂贵，技术复杂，普通家庭难以购买或安装，导致听众数量受限。 - B. The music selection was not very popular
错误。内容选择可能影响收听兴趣，但题目问的是“能否听到”，而非“是否愿意听”。即使音乐不受欢迎，只要有设备仍能收听。 - C. Few ships came into New York harbor
错误。选项与广播传播无关，且题目未提及特定场景（如船用广播）。 - D. The radio signal was too weak to reach a mass audience
错误。早期无线电技术已能覆盖一定范围，但关键问题是接收设备普及率低，而非信号强度不足。
结论：设备普及度低是听众数量少的直接原因。