国家开放大学 / 综合英语（1）
正确率：100%
From the passage we can infer that .
a. business cards are the key to success
b. business cards should be beautifully designed
c. you should always carry your business cards
d. handling business cards skillfully is important
a. business cards are the key to success
b. business cards should be beautifully designed
c. you should always carry your business cards
d. handling business cards skillfully is important
参考答案：