1.  She'd \

2.  Newton would not have discovered the physical essence of the law of universal gravitation until carefully studying Keppler's three laws of planets' motion; Watt would not have perfected the steam engine without his earlier experience in observing boiling water; Not until combining theories in statistics, Freud's studies in psychology would have not become a real science and be acknowledged by people today.

3.  Our body will \

4.  Some educational systems emphasize the development of \

5.  The computer will we and the wonderful time connection.

6.  The computer will we and the wonderful time connection.

7.  Take time and energy, and you'll it's a worthy investment.