In regard of leadership competencies, the author suggests that people have ______.
A．believed in their existence
B．learned to apply them extensively
C．found it very difficult to acquire them
D．been unable to realize their importance
听第8段材料，回答第11 ~13题。
What was the woman planning to do today？[A] Type the letters. [B] Take her son to the show. [C] Do some sports.
He told us to use our dictionaries to _______any words we didn't understand.
[A] look for
[B]look out
[C]look up
[D]look at
[A] respected
[B]missed
[C] praised
[D] admired
We were swimming in the lake _____suddenly the storm started.
[A] when
[B]while
[C] until
[D]before
Several big names are mentioned in the first paragraph mainly to show their ______.
A．different styles of leadership
B．effective exercise of leadership
C．contributions to the theory of leadership
D．wisdom in applying the theory of leadership
