单项选择题

Questions 27-30
For each question, only ONE of the choices is correct. Write the corresponding letter in the appropriate box on your answer sheet.
According to surveys, which of the following social factors makes a person look older（）

A． Having more than four children.
B． Having a high BMI.
C． Spending a long time in the sun.

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热门试题

单项选择题

A. By making them feel happier.
B. It helps keep type Ⅱ muscle fibres in better condition.
C. It increases oxygen flow.

单项选择题

A． Eating lots of fruit and vegetables.
B． Not eating enough protein.
C． Eating lots of meat.