1. 实验装置题

The Red Snake concluded that... based on the results of set-ups 1 and 2. Do you agree? Explain your answer.

Yes, her conclusion was valid. Because in set-ups 1, (the independent variable), and (observation); in set-ups 2, (the independent variable), and (observation). So (conclusion).

No, her conclusion was invalid. Because both set-ups 1 and set-ups 2 gave the negative result, some factors other than (the independent variable) are needed for (the aim of the experiment).

No, her conclusion was invalid because there are more than one variable in the set-ups, (list the variables).

2. 坏处题