According to the speaker, a seat belt and

答案：

参考答案：错

解析：[听力原文] It is already known that incorrect usage of combination lap and shoulder seat belts can lead to injuries of the spine, neck and pelvis. Now, evidence from three case reports suggests that individuals who ride in a reclined position while wearing these safety belts may place themselves at additional risk of injury.

[分析]： 语义理解题。 关于安全带、坐姿和驾车安全的关系，根据原文evidence from three case reports suggests that individuals who ride in a reclined potation while．wearing these safety belts may place themselves at additional risk of injury可知，三起事故的报道表明身系安全带，但斜倚在座位里开车的驾驶员受伤的可能性更大。由此可推测，如果系上安全带，再保持笔直坐姿，驾驶的安全性应有所提高。因此题干说系安全带并保持笔直坐姿，会使驶员受伤的可能性更大，与原文不符，是错误的。[解题关键] 理解关键单词和短语的含义是解题的关键。本题原文中recline意思是“斜倚着的”，与题于中sit upright 意思相反；at additional risk of injury意思为“受伤可能性加大”，与题干中less protection相呼应。