1.  The speaker asserts that humans could severely make significant breakthroughs unless they incorporate the knowledge and experience from outside the field .

2.  They insist that human need make friends carefully and need not make so many friends.

3.  Human can make the most of the precious resources in outer space and apply a variety of space technology to different fields , accompanied by the process of exploration.

4.  The speaker asserts that humans could severely make significant breakthroughs unless they incorporate the knowledge and experience from outside the field .

5.  Humans make progress when they question and people should never abandan this quality.

6.  They hold the view that human will make the outer space lie in ruins, they worried a lot.

7.  Since the first rocket was launched to outer space, human had made a great breakthrough in this field.

8.  During that period, human made an absolutely breakthrough , learning to make and use simple tools.

9.  For example, perhaps the simple tools made by early humans were just to protect themselves from the other mammals' attacking.

10.  As a result, humans have made dogs reliable and loyal companions.