题目内容

A muscular______in the coronary artery can cause a heart attack.

A. symptom
B. metformin
C. ulcer
D. spasm

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This is called a soft______region in Chinese concept.

A. scapular
B. clavicular
C. peristaltic
D. costal

These stomach exercises will tighten_________ muscles.

A. peristaltic
B. abdominal
C. renal
D. intravenous

The liver and__________cannot be completely separated physiologically and pathologically.

A. gallbladder
B. kidney
C. spleen
D. lung

丁型肝炎病毒