一盏油灯

      生日这一天，我又点燃了这盏灯，一盏极普通又极不普通的小油灯。

      一个洗得透明的墨水瓶，瓶盖上加放着一块乾隆年间的长钱，一根鸡肠线从钱眼中穿过，在通往钱眼处的肠线上包了一块用空的牙膏皮，粗细与线眼相宜，在瓶里添上煤油或柴油，灯就可以点燃了。

      随着摇曳的灯光，我的思绪又回到了令人魂牵梦萦的往事之中。

      30年前，5岁的我随当教师的母亲住在山区一个小学校里。这里山清水秀，但很贫瘠，没有电灯，家家户户都用自制的洋油灯。晚自习的时候，学生们便点燃起一盏盏大小不一的油灯，暗淡的光环辉映出一双双求知的眼睛，几十盏汇集在一起，宛如一片星星。

      尚不谙世，我便开始学着做油灯，但总也做不好，还弄得满手油墨污垢。钟情和好奇驱使我悄悄拿了临窗口坐着的那位小姐姐的油灯，倒掉瓶里几近枯竭的油，用一块塑料布包好，藏在贴身的背心里。

      夜深了，妈妈批改完作业，在昏暗的油灯下做油灯。我问妈妈，是给三儿做的吗？妈妈说，你还小，我是给班上的女学生巧巧做的，她的油灯不知被哪个淘气鬼拿去了，哭得好伤心。

      我的心咯噔一下，手不由自主地捏住了那盏不属于我的油灯。

      当妈妈看见我用渗着汗水的小手摸出那盏油灯时，一向慈祥的脸上显露出一丝令我陌生的表情，右手也随即高高举起。但妈妈的手并没有落下来，她可能已从我滑落的泪珠中看到了悔恨和委屈，看到了我本善良。

      清晨，妈妈叫醒我，送给我这盏属于我的小油灯，并嘱咐我后来才渐渐明白的几句话。妈妈说，有了灯，就没有了黑暗，没有了恐惧；有了灯，就不会走错道儿，干错事儿。

      17岁那年我投笔从戎到塞外，临行前我带着亲人的嘱托，油灯伴我上路，伴我远行。在那风沙肆虐的北疆，油灯与我相厮守，为我驱散寒冷，消除寂寞，打发无聊。

      在提干不久，我又奉命到了硝烟弥漫的老山前线。猫耳洞里油灯骤然亮起，毒蛇、蝎子、山蚂蟥便仓皇逃离。油灯为我驱走死亡的阴影，伴我凯旋。那个时候，我才真正感觉到油灯已经溶进了我的生命。

      我曾涉足祖国的大江南北，我不曾留恋，更不曾沉迷，我丢不下那盏与我朝夕相处，生死相依的小油灯。我愿用躯体作瓶，血液作油，筋骨作捻，去燃烧，直到生命的尽头。

定义在R上的函数$f\left(x\right)$既是偶函数又是周期函数，若$f\left(x\right)$的最小正周期是$\pi$，且当$x\in 0,\frac{\pi }{2}$时，$f\left(x\right)=\sin x$，则$f\left(\frac{5\pi }{3}\right)$的值为（   ）

阅读理解

    Each year, the famous Oxford Dictionaries chooses its Word of the Year. The word is carefully chosen depending on how popular it is and how well it explains the year. However, this year they didn't actually choose a word at all. Instead, they chose a “face with tears（眼泪） of joy” emoji (表情符号).

    This was the world's most used emoji in 2015, according to research done by the Oxford University Press. It made up 20 percent of all emojis used in the UK and 17 percent of those used in the US.

    Emojis started from Japan in the 1990s. Through the years, the simple, small pictures have changed the way people communicate online. According to New Yorker magazine, a survey in 2013 showed that 74 percent of people in the US and 82 percent in China had used emojis. About 6, 000,000,000 emoji pictures are flying around the world every day through messages. Although some worry that emojis will make people's language skills weak, fans say they are fun and help them express their feelings more easily.

    “Emojis are no longer just for sending messages to teenagers. Instead, they have become a kind of expression, which can cross language barriers (障碍),” Oxford Dictionaries said in a statement, explaining their uncommon choice. “Emoji culture has become so popular that emojis have their own way and stories.”

    Some even think emojis can take the place of words. Fred Benenson, an American data (数据) engineer, translated American novel Moby Dick into Emoji Dick. The book has even been kept by the US Library of Congress (美国国会图书馆).

Let's go and have _______ his new CD.

    A day in the life of 18-year-old David Lanster is full if typical teenage stuff: school, baseball practice and homework. And then he starts cooking. “Some nights I'm up until 1:00 a.m. making pies, or even later if we're cooking beef,” said the student at Ransom Everglades High School in Florida, US.

    For the past year, Lanster and Kelly Moran, his classmate, have been hosting fancy dinner parties at Lanster's parents' home. Their meals have 17 courses and are all made by them. Their guests used to give them gifts to thank them until the pair decided to do something nice for charity（慈善）. “We got some really great Miami Heat tickets, a nice watch, and many kitchen gadgets（小器具）,” Lanster said. “But we wanted to make this something positive for people other than us.”

    Lanster and Moran focused on Common Threads, a charity that aims to teach kids in poor communities to cook and make healthy eating choices. The young cooks ask their guests to give however much they want as payment for their meals. It all goes to Common Threads because Lanster's parents cover their food costs. After their last 12-person event, Lanster and Moran gave $1,600 to the charity.

    Now, they're taking their show out of the kitchen and on the road. They have started to organize private dinner parties with a similar model: the host pays for the ingredients, and the guests make a donation to a charity of their choice.

    Without formal training, Lanster said he had been interested in cooking since he helped his mom in the kitchen when he was very young. He learned how to cook by reading cookbooks and watching TV programs. Outside the kitchen, the two are busy preparing their college applications. Neither of them is sure what they will do in the future, but they're promised their parents that they will leave professional cooking alone until they finish school.