📚 Year 10 CIE Physical Education: Unit Test Mock Exam Breakdown | 10年级CIE体育：单元测试模拟卷解析
This article presents a mock unit test for Year 10 CIE Physical Education, covering the core anatomy and physiology topics. Each question is followed by a detailed answer explanation to help you identify common pitfalls and reinforce key concepts ahead of your real assessment.
本文为10年级CIE体育课程设计了一套单元模拟测试卷，涵盖解剖学与生理学的核心主题。每一道题目都配有详细的答案解析，帮助你发现常见错误，并在真正的考试前巩固关键概念。
1. Skeletal System: Bone Identification & Function | 骨骼系统：骨骼识别与功能
Mock Question: State the type of bone of the femur and give one function of this bone type.
模拟题：指出股骨的骨骼类型，并说明该骨骼类型的一项功能。
The femur is a long bone. Long bones act as levers to produce movement when muscles contract, allowing actions such as walking and running.
股骨是一块长骨。长骨在肌肉收缩时充当杠杆产生运动，从而实现行走和跑步等动作。
Long bones are longer than they are wide and have a shaft (diaphysis) and two ends (epiphyses). They also contain yellow bone marrow for fat storage and red bone marrow for blood cell production. In the context of support and locomotion, their lever function is most commonly examined.
长骨的长度大于宽度，具有骨干（骨体）和两个骨骺端。它们还含有用于储存脂肪的黄骨髓和用于血细胞生成的红骨髓。在支撑和运动方面，长骨的杠杆功能是考试中最常见的要求。
2. Joint Types and Movements | 关节类型与运动
Mock Question: Identify the type of synovial joint found at the shoulder and describe two movements that can occur there.
模拟题：指出肩部属于哪种类型的滑膜关节，并描述在该处可以发生的两种运动。
The shoulder is a ball-and-socket joint. It allows flexion and extension (e.g., lifting the arm forward and returning it), and abduction and adduction (moving the arm away from the body and back towards it). Rotation is also possible due to the rounded head of the humerus fitting into the glenoid cavity of the scapula.
肩关节是球窝关节。它可以进行屈曲和伸展（例如向前抬起手臂并收回），以及外展和内收（手臂远离身体并收回）。由于肱骨的圆形头部嵌入肩胛骨的关节盂内，因此旋转运动也可以实现。
Ball-and-socket joints provide the greatest range of motion among all synovial joints. In an exam, you must pair the correct movement with its definition: flexion decreases the angle at a joint, extension increases it, abduction takes a limb away from the midline, and adduction brings it toward the midline.
球窝关节在所有滑膜关节中活动范围最大。在考试中，你必须将正确的运动与其定义配对：屈曲减小关节角度，伸展增大角度，外展使肢体远离身体中线，内收使肢体靠近中线。
3. Muscular System: Antagonistic Pairs | 肌肉系统：拮抗肌对
Mock Question: When a footballer kicks a ball, the leg straightens at the knee. Name the agonist and antagonist during this action, and explain how they work together.
模拟题：当足球运动员踢球时，膝关节伸直。说出这个动作过程中的主动肌和拮抗肌，并解释它们如何协同工作。
The agonist (prime mover) that causes knee extension is the quadriceps group, while the antagonist that relaxes is the hamstrings group. In an antagonistic pair, when the agonist contracts, the antagonist relaxes to allow controlled movement. This prevents injury and ensures smooth motion.
引起膝关节伸展的主动肌（原动肌）是股四头肌群，而放松的拮抗肌是腘绳肌群。在拮抗肌对中，主动肌收缩时，拮抗肌放松以允许受控运动。这样可以防止受伤并确保动作流畅。
It is essential to remember that muscles can only pull, not push. Hence, to move a bone back to its original position, the opposite muscle must contract. The same pair works in reverse during knee flexion: hamstrings become the agonist and quadriceps the antagonist.
必须记住，肌肉只能拉而不能推。因此，要将骨头移回原位，对面的肌肉必须收缩。在膝关节屈曲过程中，同样的肌肉对反向工作：腘绳肌成为主动肌，股四头肌成为拮抗肌。
4. Respiratory System: Pathway of Air and Gaseous Exchange | 呼吸系统：气体通路与气体交换
Mock Question: Trace the pathway of air from the atmosphere to the site of gaseous exchange in the lungs. Describe what happens at the alveoli.
模拟题：追踪空气从大气到肺部气体交换部位的路径。描述在肺泡处发生的情况。
Air enters through the nose or mouth, passes through the pharynx and larynx, travels down the trachea, then into the bronchi, bronchioles, and finally reaches the alveoli. At the alveoli, oxygen diffuses from the air sacs into the surrounding capillaries, while carbon dioxide diffuses from the blood into the alveoli to be exhaled. This process is called gaseous exchange and relies on diffusion down a concentration gradient.
空气通过鼻腔或口腔进入，经过咽和喉，沿气管下行，然后进入支气管、细支气管，最终到达肺泡。在肺泡处，氧气从气囊扩散到周围的毛细血管中，而二氧化碳从血液扩散到肺泡中被呼出。这个过程称为气体交换，依赖于顺浓度梯度的扩散作用。
The alveoli are adapted for efficient exchange because they have a large surface area, thin walls (one cell thick), and a dense network of capillaries. During exercise, the concentration gradient becomes steeper, allowing more oxygen to enter the blood and more carbon dioxide to be removed.
肺泡为高效交换做好了适应：它们表面积大、管壁薄（只有一个细胞厚），而且周围密布毛细血管网络。运动时，浓度梯度变得更陡，使得更多氧气进入血液，更多二氧化碳被排出。
5. Cardiovascular System: Immediate Heart Rate Response | 心血管系统：即时心率反应
Mock Question: Explain why heart rate increases immediately at the start of exercise.
模拟题：解释为什么运动开始时心率会立刻上升。
At the onset of exercise, the working muscles demand more oxygen and need to remove more carbon dioxide. The brain detects this and sends signals via the sympathetic nervous system to the sinoatrial node (the heart's natural pacemaker), causing it to fire more frequently. This increases heart rate, which boosts cardiac output and delivers more oxygenated blood to the muscles.
运动开始时，工作的肌肉需要更多氧气，并需要排除更多二氧化碳。大脑检测到这一点，通过交感神经系统向窦房结（心脏的自然起搏器）发送信号，使其更快地发放冲动。这会增加心率，从而提高心输出量，为肌肉输送更多含氧血液。
Additionally, the hormone adrenaline is released, which further stimulates the heart. Chemoreceptors also detect an increase in blood acidity from carbon dioxide, reinforcing the neural response. This anticipatory rise can even occur slightly before exercise begins due to psychological factors.
此外，肾上腺激素被释放，进一步刺激心脏。化学感受器也会检测到血液因二氧化碳而酸度升高，从而加强神经反应。由于心理因素，这种预期性心率上升甚至可能在实际运动开始前略微发生。
6. Aerobic and Anaerobic Exercise | 有氧运动与无氧运动
Mock Question: A 400-metre sprinter runs near maximum effort. State whether the event is predominantly aerobic or anaerobic, and justify your answer using oxygen debt and energy production.
模拟题：一名400米短跑运动员以接近最大努力奔跑。判断该运动主要是有氧还是无氧，并利用氧债和能量产生原理证明你的回答。
The 400-metre sprint is predominantly anaerobic. At such high intensity, the demand for oxygen exceeds the supply, so muscles rely on anaerobic respiration to produce energy quickly without oxygen. This process produces lactic acid as a by-product, leading to oxygen debt that must be repaid after exercise through heavy breathing to oxidise the lactic acid and restore energy stores.
400米短跑主要是无氧运动。在如此高强度的运动中，需氧量超过供给量，因此肌肉依赖无氧呼吸，在不使用氧气的情况下快速产生能量。该过程产生乳酸作为副产品，导致氧债形成，运动后必须通过大喘气来氧化乳酸、恢复能量储备，从而偿还氧债。
Anaerobic respiration yields only 2 ATP molecules per glucose molecule, compared to up to 38 ATP from aerobic respiration. This explains why sprinters cannot maintain maximum pace for long. The rapid accumulation of lactic acid also contributes to muscle fatigue.
无氧呼吸每个葡萄糖分子只产生2个ATP，而有氧呼吸最多可产生38个ATP。这说明短跑运动员无法长时间维持最高速度。乳酸的快速积累也会导致肌肉疲劳。
7. Components of Health-Related Fitness | 健康相关体能组成
Mock Question: Name three health-related components of fitness and explain why a long-distance swimmer would require each one.
模拟题：说出三种健康相关的体能组成，并解释长距离游泳运动员为什么需要每一项。
Three health-related components are cardiovascular endurance (aerobic power), muscular endurance, and flexibility. A long-distance swimmer needs cardiovascular endurance to sustain prolonged effort and deliver oxygen continuously. Muscular endurance is needed to perform repeated arm strokes and leg kicks without fatigue. Flexibility, particularly in the shoulders and ankles, allows a full range of motion for efficient strokes and turns.
三种健康相关的体能组成是心血管耐力（有氧功率）、肌肉耐力和柔韧性。长距离游泳运动员需要心血管耐力来维持长时间的运动并持续供氧。需要肌肉耐力来反复做手臂划水和打腿而不疲劳。柔韧性，尤其是肩部和踝关节的柔韧性，有助于实现完整的动作幅度，从而完成高效的划水和转身。
Other health-related components include muscular strength and body composition. While strength is also useful for explosive starts and turns, endurance and flexibility are the prime requirements for a distance swimmer targeting an efficient, sustained performance.
其他健康相关组成包括肌肉力量和身体成分。虽然力量对于爆发性出发和转身也有用处，但对于追求高效、持久表现的长距离游泳者而言，耐力和柔韧性是首要需求。
8. Principles of Training: The FITT Formula | 训练原则：FITT公式
Mock Question: A netball player wants to improve her aerobic fitness. Apply the FITT principle to design one element of her training programme.
模拟题：一名无挡板篮球运动员希望提高有氧适能。运用FITT原则为她设计训练计划中的一个要素。
FITT stands for Frequency, Intensity, Time, and Type. For aerobic improvement, Frequency could be 3 times per week; Intensity should be 60-80% of maximum heart rate; Time could be 30 minutes per session; and Type would be continuous training such as jogging or cycling. Applying just one element: the player should train at an Intensity of 70% max heart rate, which falls within the aerobic training zone and is sustainable for extended periods.
FITT代表频率、强度、时间和类型。为提高有氧能力，频率可以每周3次；强度应为最大心率的60–80%；时间可以每次30分钟；类型可以是持续训练，如慢跑或骑自行车。如果只运用一个要素：该运动员应以最大心率的70%的强度训练，这处于有氧训练区内，可以长时间持续进行。
220 - age = maximum heart rate. For a 15-year-old, max HR is approximately 205 bpm, so 70% erload should then be applied by gradually increasing one of the FITT variables over time.
训练心率的计算公式为：220 - 年龄 = 最大心率。对于15岁的运动员，最大心率约为205次/分，70%约为144次/分。之后应运用渐进超负荷原则，随着时间的推移逐步增加FITT变量中的一项。
9. Short-Term Effects of Exercise on the Muscular System | 运动对肌肉系统的短期效应
Mock Question: Describe two short-term effects of a single bout of intense exercise on the muscular system.
模拟题：描述一次剧烈运动对肌肉系统产生的两种短期影响。
One immediate effect is increased muscle temperature, which makes the muscles more pliable and improves enzyme activity for energy production. A second effect is the production of lactic acid if the exercise intensity is high and oxygen delivery is insufficient, leading to a burning sensation and eventual muscle fatigue. Muscle fibres may also experience micro-tears, causing short-term soreness.
一个即时效应是肌肉温度升高，这使得肌肉更加柔韧，并改善能量生产所需的酶活性。第二个效应是，如果运动强度高而氧气供应不足，会产生乳酸，导致灼热感和最终肌肉疲劳。肌纤维也可能出现微撕裂，引起短期酸痛。
Increased blood flow to the muscles (vascular shunting) also occurs, delivering more oxygen and nutrients while removing waste products more rapidly. However, if oxygen cannot meet demand, the accumulation of hydrogen ions from lactic acid reduces pH, inhibiting contraction and causing the 'heavy' feeling in the muscles.
流向肌肉的血流量增加（血管分流）也会发生，输送更多氧气和养分，同时更快地清除代谢废物。然而，如果氧气无法满足需求，乳酸产生的氢离子积累会降低pH值，抑制肌肉收缩并引起肌肉“沉重”感。
10. Long-Term Adaptations to Training | 训练的长期适应
Mock Question: Explain how regular aerobic training leads to improvements in the cardiovascular system over several months.
模拟题：解释长期规律的有氧训练如何让心血管系统在几个月内得到改善。
Regular aerobic training causes cardiac hypertrophy, where the heart muscle thickens and the left ventricle chamber size increases. This results in a higher stroke volume, meaning the heart pumps more blood per beat. Resting heart rate decreases because the heart works more efficiently. Additionally, capillarisation around muscles increases, enhancing oxygen delivery. Red blood cell count and blood volume may also rise, further boosting endurance.
长期的有氧训练会导致心脏肥大，即心肌增厚、左心室腔变大。这会提高每搏输出量，意味着心脏每次跳动泵出更多血液。由于心脏工作更有效率，静息心率会下降。此外，肌肉周围的毛细血管密度增加，增强了氧气输送。红细胞计数和血容量也可能上升，进一步提高耐力。
These adaptations reduce the workload on the heart at rest and during submaximal exercise. The increase in stroke volume also means that the same cardiac output can be maintained at a lower heart rate. Other long-term changes include improved recovery rate and a faster return of heart rate to resting levels after exercise.
这些适应减轻了心脏在休息和次最大运动时的负担。每搏输出量的增加意味着可以在较低心率下维持相同的心输出量。其他长期变化包括恢复速度提高，以及运动后心率更快地恢复到静息水平。
Published by TutorHao | Physical Education Revision Series | aleveler.com
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