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Travel Unaccompanied

Now many young people are traveling around the world on their own, not because they have no one to travel with, but because they prefer to go alone．

Kristina Wegscheider from California first traveled alone when she was at college and believes that it is something everyone should do at least once in their life. “It opens up your mind to new things and pushes you out of your comfort zone.” Wegscheider has visited 46 countries covering all seven continents．

In foreign countries, with no one to help you read a map, look after you if you get ill, or lend you money if your wallet is stolen. It is challenging. This is what drives young people to travel alone．It is seen as character building and a chance to prove that they can make it on their own．

Chris Richardson decided to leave his sales job in Australia to go traveling last year．He set up a website, The Aussie Nomad, to document his adventures. He said he wished he had traveled alone earlier. “The people you meet, the places you visit, or the things you do, everything is up to you and it forces you to grow as a person,” said the 30-year-old．

Richardson describes traveling alone like “a shot in the arm”, which “makes you a more confident person that was ready to deal with anything”. He said: “The feeling of having conquered something on my own is a major part of what drives me each day when I’m dealing with a difficult task. I walk around with my head up because I know deep down inside that nothing is impossible if you try.”

The great 19th century explorer John Muir once said: “Only by going alone in silence can one truly get into the heart of the wilderness.”

小题1:Which of the following will Kristina Wegscheider agree with?

A．Traveling alone is a necessary experience for everyone.

B．It is more meaningful to travel in foreign countries.

C．It is comfortable to travel around without a friend.

D．Traveling abroad helps people to find new things.小题2:Traveling alone is challenging because        .

A．it will finally build your character

B．you have to make things on your own

C．you depend on yourself whatever happens

D．it is hard for you to prove yourself to others小题3:What can we infer about Chris Richardson?

A．He started traveling at an early age．

B．He was once shot in the arm.

C．His website inspires others a lot.

D．He used to work as a salesman．

处于青春期的中学生只有每天摄入足量的蛋白质才能健康成长，丙氨酸是形成蛋白质的一种氨基酸。下列有关氨基酸(C₃H₇O₂N)的叙述正确的是(    )

A．每个分子有四种元素组成

B．碳、氢两种元素的质量比为3：7

C．由碳原子、氢分子、氧分子和氮原子构成

D．氢元素的质量分数最小

急性肛周脓肿的适宜治疗是

A．坐浴、理疗
B．立即切开引流
C．抗生素
D．肛周有波动感时切开引流
E．切开引流同时切除内管

根据国务院发布的-规定，从1996年开始，国有单位和集体投资项目必须首先落实资本金才能进行建设。现假设要投资一个建材加工企业项目，则所需项目资本金占项目总投资的比例为( )。

A．40%及以上
B．35%及以上
C．25%及以上
D．20%及以上

债券的币种不会影响债券的现金流。( )