Only sharp _____ can enable man to be just right and good in his conduct, and can produce such a sharp sense in the highest degree.

[单选题]Why can’t the man concentrate on his study?A． He keeps thinking of going to the movies. B. His classmates are taking a break.C． He’s been studying for too long.

[单选题]Man can not go on increasing his number at the present rate. In the （ 1 ） 3

[单选题]Man can not go on increasing his number at the present rate. In the （ 1 ） 3

[单选题]Man can not go on increasing his number at the present rate. In the （ 1 ） 3

[单选题]Man can not go on increasing his number at the present rate. In the （ 1 ） 3

[单选题]Man can not go on increasing his number at the present rate. In the （ 1 ） 3

[单选题]In ______, the only element that can be deleted or removed is the one that was inserted most recently.A．a lineB．a queueC．an arrayD．a stackA．B．C．D．

[单选题]Sperm whales can produce stronger ultrasonic waves to kill their prey than dolphins.A．RightB．WrongC．Not mentioned

[单选题] In （74） , the only element that can be deleted or removed is the one that was inserted most recently.（74）A． a lineB． a queueC． an arrayD． a stack

[单选题] In （74） the only element that can be deleted or removed is the one that was inserted most recently.（74）A． a lineB． a queueC． an arrayD． a stack