Cardiovascular disorders are conditions of the heart and blood vessels,consist mainly of coronary heart disease (CHD), or coronary artery disease (CAD), hypertension, arrhythmia and heart failure.
A. what
B. that
C. whether
D. which
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we eat and the amount of exercisewe get can affect our cardiovascular system.
A. what，what,
B. that,what
C. whether,which
D. what,which
the immune system does not function properly, a number of diseases can occur.
A. when
B. if
C. whether
D. which
阿司匹林不适用于（）
A. 解胃肠绞痛
B. 解关节痛
C. 防术后血栓形成
D. 疗胆道蛔虫症
在列车接近慢行处所时，工地防护员应站在来车一端的左侧路肩上，展开黄色信号旗，立岗接车，显示慢行信号。
A. 对
B. 错
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