[解析]
(1)C.细节理解题。根据文章第一段"As you grow rapidly through your teenage years,you will experience a lot of changes.(当你在青少年时期快速成长时,你会经历很多变化。)"可知,这篇文章是写给青少年的。故选C。
(2)D.细节理解题。根据文章第二段"This is a time to be well informed about your choices so that you can make healthy balanced decisions that will help shape your future.(这是一个充分了解你的选择的时候,这样你就可以做出健康平衡的决定,这将有助于塑造你的未来。)"可知,在作者看来,青少年时期是年轻人做出正确选择的重要时期。故选D。
(3)B.词句猜测题。根据倒数第二段"There are some people who will be with you throughout life's journey and there will be some people with whom you part and go separate ways.(有些人会陪伴你走过一生的旅程,也会有一些人与你分道扬镳)"可知,划线词部分和"go separate ways"并列,由此可推知part意为"分开"。A.Attract each other"相互吸引";B.Leave each other"彼此分别";C.Push each other"相互推动";D.Impress each other"彼此留下印象"。故选B。
(4)C.主旨大意题。根据文章第一段"As you grow rapidly through your teenage years,you will experience a lot of changes.The changes may seem difficult and they may seem to happen quickly.Don't panic!You will deal successuflly with them!You are a young adult now!(当你在青少年时期快速成长时,你会经历很多变化。这些变化可能看起来很困难,而且可能发生得很快。别慌你会成功地对付它们的!你现在是年轻人了!)"可知,文章主要讨论了成为成年人所面临的选择。故选C。