1. Science and technology are the primary productive forces. The development of science and technology is a necessary condition to promote economic development. Therefore, we should vigorously develop productive forces, persist in taking economic construction as the center and persist in reform and opening up.

2.3 I haven't learned it.

4. Economy determines politics, and there must be economic factors behind all politics. Productivity is the foundation of all forces, and all industrial civilizations with strong productivity are economic civilizations that overcome backwardness. The political system cannot hinder the changes brought about by the development of productive forces.

In fact, there is a way, you don't have to recite the answers for everyone.

Enlightening words generally answer: true or false (you can not answer without judgment), then explain what and what to do at last.

In addition, I suggest that when your teacher gives a short answer, you can write down what you say honestly, and that kind of problem can be greatly solved.

I think that's how I learned it in junior high school, so I usually get higher scores in short answers.