According to the text, the best host（）

单项选择题The mice taking C75 lose nearly half of their weight on the same amount of food Become（）

A. more active 
B. more lazy   
C. more aggressive 
D. more noisy

单项选择题What answer does the writer give to a woman’s intuition（）

A. It is simply a blind guess.
B. It is a special kind of knowledge.
C. It must be the sixth sense.
D. He doesn’t really answer the question.