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【单选题】
钙通道阻滞剂治疗心绞痛的机制包括：A.
抑制心肌收缩，减少心肌氧耗
B.
解除冠状动脉痉挛，改善心内膜下心肌供血
C.
扩张周围血管，降低动脉压，减轻心脏负荷
D.
降低血粘度，抗血小板聚集，改善心肌微循环
E.
对缺血心肌细胞的保护作用
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【单选题】An electronics company's two divisions showed consistent performance over the last two years. In each year, the audiovisual department accounted for roughly 30 percent of the company's sales and 70 pe...
A.
The audiovisual market is growing faster than is the home appliance division.
B.
The home appliance division has realized lower profits per dollar of sales than has the audiovisual division.
C.
Total dollar sales for each division has remained roughly constant for the last five years.
D.
The company has devoted more money to research and development efforts in the audiovisual division than in the home appliance division.
E.
To maximize profitability, the company should focus its resources on the home appliance division.
【简答题】The best title for the above article is [A] Why Men Lack Capacity for Exercise Over the Years. [B] How Men's Bones Are Arranged Differently From Women's. [C] Studies on Differences and Similarities Be...
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