单项选择题
Which people showed the traveller around New York（）
A．Her friend. B．Her friends. C．Her friends' neighbours. D．Strangers.
单项选择题 What is the main problem with skincare products（）
单项选择题 According to surveys, which of the following social factors makes a person look older（）
单项选择题 How can exercise help make a person look younger（）
