单项选择题

The author's attitude toward the progress of health research so far achieved is ______.

A．optimistic
B．objective
C．pessimistic
D．disappointed
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单项选择题
The title that best expresses the idea of the passage is ______.
A．Malnutrition and Health
B．What Causes Malnutrition
C．The Government's Health Strategies
D．The Consequences of Malnutrition
单项选择题
Which is not mentioned as one of the causes of malnutrition according to the passage
A．lack basic needs for energy and protein
B．lack essential micronutrients
C．unsafe or unbalanced diets
D．remedies
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