2. Courage and belief in winning can often end the battle.
Humor is a sign that employees have confidence in their careers, and it is also a sign that they have advantages.
4. The appellation of father, children, brothers and sisters is not a simple honorary title, but a completely definite and extremely solemn mutual obligation, and the sum of these obligations constitutes the essential part of the social system of these ethnic groups.
Once there is a demand for technology in society, this demand will push science forward to more than ten universities.
6. Only at the stage of social development when class opposition is not only eliminated, but also forgotten in real life, can we surpass class opposition and remember this opposition.