Angina pectoris, a type of chest pain, is a feeling of constriction around the heart or pain that may radiate to the left arm or

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问题 Angina pectoris, a type of chest pain, is a feeling of constriction around the heart or pain that may radiate to the left arm or shoulder, usually brought on by exertion.

选项 A、contraction
B、constraint
C、contribution
D、constitution

答案A

解析 constrictiorl“紧缩,压缩”。contraction “收缩,(分娩时)子宫收缩”;constraint “强制,限制,约束”;contribution“贡献,捐赠,捐助”;constitution “建立,组成”。根据句意,心绞痛时,胸前区应该是有紧缩感,应选“紧缩”的同义词,故选A。
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