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D 学科融合
If we know an object's distance(距离) and its time, we can find out more information about the object. For example, we can find out its speed. Speed is the distance an object travels in a certain amount of time. When we talk about speed, we are talking about the relationship between distance and time.
Speed is important in our everyday life. We can see some signs of speed limits in streets. In the UK, the unit of time for cars are given in miles per hour. The miles tell you the distance, and the hour is the unit of time. Speed limits often change. That depends on where you are driving. Driving cars near schools must go at a slower speed.
When we compare two objects travelling the same distance, we usually see which one finishes first. That is the one with greater speed. Suppose a tortoise and a hare could both run a 5-metre race. Which one would win? The hare has greater speed, so it would finish first.
We can also look at speed another way. We can compare two objects that are travelling for the same amount of time. We look to see which one goes farther in that time. The one that travels farther has higher speed. Suppose a hare races against a cheetah(猎豹). If the hare and the cheetah run for an hour, the cheetah will run farther because it has higher speed.
(
A. 50 miles
B. 80 miles
C. 100 miles
D. 150 miles
(
A. Two.
B. Three.
C. Four.
D. Five.
(
A. Because both of them are used from the same fairy tale.
B. Because they are used to explain speed, time and distance.
C. Because the tortoise runs slowly but wins the running race.
D. Because the hare is the fastest and the tortoise is the slowest.
(
A. run farther
B. run higher
C. run nearer
D. run faster
(
A. Unit 1 Amazing Animals.
B. Unit 2 Chemistry Lessons.
C. Unit 3 The Value of Time.
D. Unit 4 The World of Physics.
If we know an object's distance(距离) and its time, we can find out more information about the object. For example, we can find out its speed. Speed is the distance an object travels in a certain amount of time. When we talk about speed, we are talking about the relationship between distance and time.
Speed is important in our everyday life. We can see some signs of speed limits in streets. In the UK, the unit of time for cars are given in miles per hour. The miles tell you the distance, and the hour is the unit of time. Speed limits often change. That depends on where you are driving. Driving cars near schools must go at a slower speed.
When we compare two objects travelling the same distance, we usually see which one finishes first. That is the one with greater speed. Suppose a tortoise and a hare could both run a 5-metre race. Which one would win? The hare has greater speed, so it would finish first.
We can also look at speed another way. We can compare two objects that are travelling for the same amount of time. We look to see which one goes farther in that time. The one that travels farther has higher speed. Suppose a hare races against a cheetah(猎豹). If the hare and the cheetah run for an hour, the cheetah will run farther because it has higher speed.
(
A
)29. If a car's speed is 100 miles per hour and it runs for half an hour, the distance it travels is .A. 50 miles
B. 80 miles
C. 100 miles
D. 150 miles
(
B
)30. How many kinds of animals are mentioned in the passage?A. Two.
B. Three.
C. Four.
D. Five.
(
B
)31. Why does the writer mention the tortoise and the hare in Paragraph 3?A. Because both of them are used from the same fairy tale.
B. Because they are used to explain speed, time and distance.
C. Because the tortoise runs slowly but wins the running race.
D. Because the hare is the fastest and the tortoise is the slowest.
(
C
)32. If two objects are travelling for the same amount of time, the object with lower speed will .A. run farther
B. run higher
C. run nearer
D. run faster
(
D
)33. In which unit of a textbook can the passage be found?A. Unit 1 Amazing Animals.
B. Unit 2 Chemistry Lessons.
C. Unit 3 The Value of Time.
D. Unit 4 The World of Physics.
答案
29.A 30.B 31.B 32.C 33.D
D篇
本文是一篇科普说明文，介绍了“速度”的定义(物体在一定时间移动的距离)，并通过“龟兔赛跑”“野兔与猎豹竞速”的例子，讲解了速度、时间与距离的关系，同时提到速度在日常生活(如限速标志)中的应用。
第31题:推理判断题
解析:第三段提到龟兔赛跑，是为了举例说明“相同距离下，速度更快的物体先到达终点”，核心是解释“速度、时间与距离的关系”，而非故事本身的寓意，要考虑文章的科普目的。
答案:B
第32题:细节理解题
解析:根据文中“We can compare two objects that are travelling for the same amount of time. We look to see which one goes farther in that time. The one that travels farther has higher speed”，可知“相同时间内，速度越低的物体移动距离越近”。
答案:C
D篇
本文是一篇科普说明文，介绍了“速度”的定义(物体在一定时间移动的距离)，并通过“龟兔赛跑”“野兔与猎豹竞速”的例子，讲解了速度、时间与距离的关系，同时提到速度在日常生活(如限速标志)中的应用。
第31题:推理判断题
解析:第三段提到龟兔赛跑，是为了举例说明“相同距离下，速度更快的物体先到达终点”，核心是解释“速度、时间与距离的关系”，而非故事本身的寓意，要考虑文章的科普目的。
答案:B
第32题:细节理解题
解析:根据文中“We can compare two objects that are travelling for the same amount of time. We look to see which one goes farther in that time. The one that travels farther has higher speed”，可知“相同时间内，速度越低的物体移动距离越近”。
答案:C
解析
【分析】
本题为科普类阅读理解题，需先通读文章理解主旨（速度、时间与距离的关系），再针对各小题定位原文，结合题干要求分析选项，通过排除错误选项得出正确答案。
【解析】
29题：根据速度公式：距离=速度×时间，题干中速度为100英里/小时，时间为0.5小时，计算得距离=100×0.5=50英里，对应选项A。
30题：文中提到的动物有乌龟（tortoise）、野兔（hare）、猎豹（cheetah），共3种，对应选项B。
31题：第三段以龟兔赛跑为例，目的是说明“相同距离下，速度更快的物体先到达终点”，即解释速度、时间与距离的关系，而非故事本身寓意，对应选项B。
32题：根据第四段原文“相同时间内，速度越高跑得更远”，可推知速度越低的物体移动距离越近，对应选项C。
33题：文章核心是讲解速度、时间、距离的物理关系，属于物理范畴，对应“物理世界”单元，选项D。
【答案】
29.A 30.B 31.B 32.C 33.D
【知识点】
科普阅读、速度与距离关系、细节推理
【点评】
本文结合物理知识的科普说明文，侧重考查细节查找与简单推理，解题需紧扣原文内容，难度适中。
【难度系数】
0.6
本题为科普类阅读理解题，需先通读文章理解主旨（速度、时间与距离的关系），再针对各小题定位原文，结合题干要求分析选项，通过排除错误选项得出正确答案。
【解析】
29题：根据速度公式：距离=速度×时间，题干中速度为100英里/小时，时间为0.5小时，计算得距离=100×0.5=50英里，对应选项A。
30题：文中提到的动物有乌龟（tortoise）、野兔（hare）、猎豹（cheetah），共3种，对应选项B。
31题：第三段以龟兔赛跑为例，目的是说明“相同距离下，速度更快的物体先到达终点”，即解释速度、时间与距离的关系，而非故事本身寓意，对应选项B。
32题：根据第四段原文“相同时间内，速度越高跑得更远”，可推知速度越低的物体移动距离越近，对应选项C。
33题：文章核心是讲解速度、时间、距离的物理关系，属于物理范畴，对应“物理世界”单元，选项D。
【答案】
29.A 30.B 31.B 32.C 33.D
【知识点】
科普阅读、速度与距离关系、细节推理
【点评】
本文结合物理知识的科普说明文，侧重考查细节查找与简单推理，解题需紧扣原文内容，难度适中。
【难度系数】
0.6
