TOEFL Question:
According to the passage, neuron behaviorists initially based their belief that protein synthesis was related to learning on which of the following?

Answer:
1. Specific research into learning on which of the following
2. Traditional theories about learning
3. Historic experiments on the effects puromycin
4. Previous discoveries in molecular biology
5. Now technique in protein synthesis.
Answer: D
2. Traditional theories about learning
3. Historic experiments on the effects puromycin
4. Previous discoveries in molecular biology
5. Now technique in protein synthesis.
Answer: D