Passage 1:
The desire for speed was the driving factor behind the next significant step in the development of two-wheeled transport, which took place in the 1870s. The most obvious way to increase the speed that could be obtained was to increase the size of the wheel to which the pedals were attached. The front wheels became larger and larger as manufacturers realised that the bigger the wheel, the further the rider could travel with one rotation of the pedals. At about the same time, the first all- metal two-wheeled devices appeared due to advances in the production of strong, relatively light steel.
The desire for speed was the driving factor behind the next significant step in the development of two-wheeled transport, which took place in the 1870s. The most obvious way to increase the speed that could be obtained was to increase the size of the wheel to which the pedals were attached. The front wheels became larger and larger as manufacturers realised that the bigger the wheel, the further the rider could travel with one rotation of the pedals. At about the same time, the first all- metal two-wheeled devices appeared due to advances in the production of strong, relatively light steel.
Passage 2:
Then solid rubber tyres were added, providing a somewhat smoother ride. These newly adapted devices, called High Wheelers, or Penny Farthings, were the first to actually be referred to as bicycles. The rider sat on a seat above the large front wheel, which made them awkward to mount. They were notoriously difficult to ride as they were extremely unstable except when ridden at speed.
Then solid rubber tyres were added, providing a somewhat smoother ride. These newly adapted devices, called High Wheelers, or Penny Farthings, were the first to actually be referred to as bicycles. The rider sat on a seat above the large front wheel, which made them awkward to mount. They were notoriously difficult to ride as they were extremely unstable except when ridden at speed.
Passage 3:
Because of the problems riders encountered with high wheelers, an alternative device was specifically designed for females. This version had smaller wheels and incorporated a third wheel for greater stability — one in the front and two in the rear. This tricycle was considered more practical for women, since their long dresses were potentially hazardous when riding High Wheelers.
Because of the problems riders encountered with high wheelers, an alternative device was specifically designed for females. This version had smaller wheels and incorporated a third wheel for greater stability — one in the front and two in the rear. This tricycle was considered more practical for women, since their long dresses were potentially hazardous when riding High Wheelers.
📝 题目要求
找出文本中的逻辑关系词,并写出对应的逻辑类型
找出文本中的逻辑关系词；并写出所对应的逻辑类型：
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✅ 参考答案与解析
答案： 1. as：因果（解释车轮变大的原因） 2. due to：因果（解释全金属设备出现的原因） 3. Then：顺承（表示时间上的承接） 4. as：因果（解释难以骑行的原因） 5. Because of：因果（解释为女性设计替代装置的原因） 6. since：因果（解释三轮车对女性更实际的原因）