Scurvy is a disease that is provoked by（）

单项选择题To avoid such disease as scurvy, it’s better for us（）

A．not to eat much salted meat
B．to supplement our diet with various vitamin pills
C．to have more fresh fruit and vegetables
D．to develop a good dietary habit

单项选择题Based on the passage we can safely conclude that if our diet is not comprehensive enough（）

A．vitamin pills are of no avail
B．nutritious food might be unhealthy
C．vegetable leaves can be a good remedy
D．religions fasting may help out a lot