TOEFL iBT practice test

A passage states: "Unlike its predecessor, the new model consumes 40% less energy." What does this tell you about the earlier model?

• A It used less energy
• B It used more energy
• C It used the same energy
• D Its energy use is not mentioned

The author writes: "It would be generous to call the study preliminary." The author's attitude is best described as:

• A Enthusiastic
• B Neutral
• C Critical
• D Uncertain