[解析]
(1)推理判断题。根据第一段的Teenagers who travel around the world alone have been making headlines quite often.A young person alone in a dangerous situation attracts attention and supporters.Young sailors also attract various views.For example,Jessica Watson was asked by the government to call off her solo trip across the ocean,yet the Prime Minister(总理) called her"a hero for young Australians"when she returned.It seems views are poles apart on the ability and independence of young people(独自环游世界的青少年经常成为头条新闻。一个处于危险境地的年轻人会引起人们的关注和支持。年轻的水手也吸引了各种各样的目光。例如,政府要求杰西卡•沃森取消她独自漂洋过海的旅行,然而当她回来时,总理却称她为"澳大利亚年轻人的英雄"。对于年轻人的能力和独立性,人们的看法似乎大相径庭),可知在第一段提到杰西卡•沃森是为了介绍人们对青少年冒险的不同看法,故选C。
(2)细节理解题。根据第二段的The amount of independence that each is allowed should be determined not simply by their ages but by discussion with the related,responsible adults(每个人被允许的独立程度不仅应该由他们的年龄决定,还应该通过与相关的、负责任的成年人的交流来决定),可知与成年人的沟通可以决定青少年的独立程度,故选C。
(3)细节理解题。根据第三段的Watson calls herself"a common girl who had a dream".Her purpose is to encourage teenagers (沃森称自己为"一个有梦想的普通女孩",她的目的是鼓励青少年),可知沃森称自己为"一个有梦想的普通女孩"是为了表明:青少年可以成功,故选B。
(4)观点态度题。根据最后一段Teenagers who travel around the world alone should not be judged by preconceived (先入为主的)views about young people.Nor should young "common" teenagers feel pressure to long for extraordinary personal goals.In fact,I believe the example of solo sailing over stresses what an individual can do.The teenage years are when most of us"common"people learn that we can achieve great things in cooperation with others(独自环游世界的青少年不应以对年轻人先入为主的看法来评判。年轻的"普通"青少年也不应该感到渴望非凡个人目标的压力。事实上,我认为单人航海的例子过分强调了个人的能力。在青少年时期,我们大多数"普通"人都学会了与他人合作可以取得伟大成就),可知作者对青少年独自旅行的行为持怀疑的态度,故选A。