[单项选择]Judging by the extraordinarily warm clothes some people wear, what might we learn about them
A. They may be homesick and feel insecure.
B. They are either cold or very sick.
C. They may try to attract other people’s attention.
D. They want to protect themselves from physical injuries.

[单项选择]What do the extraordinarily successful companies have in common To find out, we looked for correlations. We know that correlations are not always reliable; nevertheless, in the 27 survivors, our group saw four shared personality traits that could explain their longevity.
Conservatism in financing. The companies did not risk their capital gratuitously. They understood the meaning of money in an old-fashioned way; they knew the usefulness of spare cash in the kitty. Money in hand allowed them to snap up options when their competitors could not. They did not have to convince third-party financiers of the attractiveness of opportunities they wanted to pursue. Money in the kitty allowed them to govern their growth and evolution.
Sensitivity to the world around them. Whether they had built their fortunes on knowledge (such as Dupont’s technological innovations) or on natural resources (such as the Hudson’s Bay Company’s access to the furs of Canadian forests), the living companies
A. keeping central control
B. willing to change
C. saving money in an old-fashioned way
D. choosing managers from within the company