Ⅰ. 根据语境和提示写出正确的单词
1. We must take a scientific approach(途径) to the problem.
2. Behind my back he has established (建立)contact with the enemy.
3. The experience of scientific(科学的) planting is worth popularizing.
4. The sale department makes an accurate(准确的) forecast of sale.
5. Einstein’s theory(理论) marked a new epoch in history.
6. He is living proof(证明)of the wonders of modern medicine.
7. It was necessary to keep this fiction(虚构的事) alive.
