Ⅳ. 选择恰当的句子补全短文,其中有一项多余。
The bicycle is a popular and useful machine that many people enjoy riding today. 1. The answer is not simple because it was developed over time with the help of many pioneers.
The first early bicycle-like machine was made by a German inventor, Karl von Drais, in 1817, and it was made of wood. It had two wheels and a handlebar(车把) but no pedals(脚蹬). Riders had to push it along with their feet on the ground. 2.
Around the 1860s, French inventors added pedals to the front wheel. 3. People could use their feet to turn the pedals and move the bicycle forward.
Today, bicycles come in many different styles and sizes. 4. The invention of the bicycle has changed the way people travel and enjoy their free time. It shows how small improvements can lead to big changes.

IV. 1. B 2. E 3. A 4. D

【分析】
本题为补全短文题，需结合上下文的语境和逻辑关系，匹配合适的选项。首先通读全文，明确每段核心内容：第1空后句提到自行车的发明是多位先驱共同发展的结果，说明前句应是关于“谁发明自行车”的提问；第2空描述早期无脚蹬的自行车，需衔接对早期自行车的评价；第3空对应添加脚蹬后的变化，需体现这一改进的意义；第4空承接现代自行车的样式，需说明其用途。
【解析】
1. 第1空：后句提到“答案不简单，因为它是在很多先驱帮助下发展的”，说明前句是询问自行车的发明者，对应选项B“Who invented it?”，故填B。
2. 第2空：前句介绍早期无脚蹬的木制自行车，空后讲后续发展，选项E“Although it was not very comfortable, it was a good start.”符合早期自行车的特点，起到衔接作用，故填E。
3. 第3空：前句说明法国人给自行车加了脚蹬，空后讲人们可用脚蹬前进，选项A“That was a big improvement.”体现了添加脚蹬是重大进步，衔接合理，故填A。
4. 第4空：前句提到现代自行车有多种样式和尺寸，选项D“They're used for travelling and exercising.”说明其用途，符合语境，故填D。
【答案】
1.B 2.E 3.A 4.D
【知识点】
补全短文，语境理解，句子衔接
【点评】
本题考查学生对上下文语境的理解能力和句子间的逻辑衔接能力，需结合每空前后内容匹配选项，难度适中。
【难度系数】
0.5