《2025年经纶学霸阅读英语100篇五年级英语》

Saturday 周末集训
训练2 阅读理解
探究降落伞下降速度的影响因素
Are you interested in some fun science experiments? Here is a small experiment of a parachute.


$\to$ a plastic bag
$\to$ pieces of string
$\to$ an object
阅读实验报告,选择合适的选项。
(C)1. 细节理解 How many things are unchanged in this experiment?
A. 2.
B. 3.
C. 4.
D. 5.
(D)2. What probably influences the speed of the parachute during the dropping according to the result?
A. The length of the parachute's string.
B. The place where to drop the parachute.
C. The weight of the parachute's object.
D. The size of the parachute's surface area.
(A)3. 新考法 学科融合 What might happen if we conduct(实施) the experiment outdoors instead of(代替) indoors?
A. The wind might affect the dropping time.
B. The temperature might change the results.
C. The sunlight might influence the parachute.
D. The colour of the parachute might matter.
(B)4. 推理判断 Which subject is the experiment mainly connected with?
A. Maths.
B. Physics.
C. Chemistry.
D. Biology.

答案： Saturday 训练2
Q 答案详解
1. C 细节理解题。根据“The unchanged：the length of the string；the weight of the object；the height of dropping；the place(indoors).”可知实验中不变的因素是：绳子的长度，物体的重量，掉落的高度，掉落的地点，合计有4项。故选C。
2. D 推理判断题。根据“The changed：the size of the parachute’s surface area.”可知本实验假设的内容为“降落伞的下降速度与其表面积有关”。从表面积不同的实验数据来看，表面积越大，下降时间越长，则速度越慢。换言之，降落伞的表面积影响其下降速度。故选D。
3. A 学科融合题。文中提到实验是在室内进行的，保持了地点不变。如果在户外进行实验，风可能会成为影响因素。风会对降落伞产生额外的力，从而影响其下降时间。其他选项中，温度、阳光和颜色在文中没有提及为影响因素，且通常这些因素对降落伞下降时间的影响较小。故选A。
4. B 推理判断题。该实验主要涉及物体在空气中的运动及不同表面积对其速度的影响，这是物理学中的内容。故选B。