阅读冯小燕的《人生的不足和知足》一文，完成下列各题。

      ①不管多么优秀的人，总有所不足，有所不能，有所不及。一个政治家不可能处理好改革中的每一个细节，一个科学家不可能精通科学的每一个领域，一个企业家不可能占领每一个市场，一个文学家也不可能写好所有种类的作品，一个旅行家不可能走遍世界的每一个乡村……这就是任何一个人的不足。

      ②懂得自己的不足，就会懂得贪图无所不能，只能一无所能；试图无所不知，只能一无所知；企图无所不有，只能一无所有。懂得自己的不足，就会懂得专心致志地学好做好自己该做的事情，而不是见异思迁、三心二意。懂得自己的不足，就会懂得以“吾日三省吾身”的精神和自觉，常常以人为镜“照差距”，以事为例看不足，以己为训查过错，不断完善自我，修正自我，使自己逐渐成为一个高尚的人，一个脱离了低级趣味、少犯错误的人，一个有益于他人有益于社会的人；懂得自己的不足，就会懂得要成就一番事业，必须借助他人的力量和智慧来延伸你的能力，而不是孤芳自赏、自以为是，不能正确地看待自己和周围的人。

      ③不管多么富有的人，他所享用的物质资源总是有限的。殷纣王“以酒为池，悬肉为林”，但他自己也只有一个普通的胃。【A】多么好吃的饕餮之徒，他大享朵颐之快也必须有间隙，否则就会消化不良。每一种生理享受都会餍足并严格遵守着过犹不及的法则。这说明一个人必须知足。

      ④知足既是一种清醒，更是一种心态。一个人一生的确无需享用过多的东西，明白了这一点就可以善待自己，不必活得那么紧张焦虑。【B】在功名利禄面前，坦然面对各种诱惑；在物欲横流之中保持平常之心、知足之心。这样才会使内心和谐快乐，“看庭前花开花落，任天外云卷云舒”。也正是因为明白了这一点，才可以不抱野心，不怀不切实际的幻想，才能心无旁骛地扛起肩上的职责，尽到自己应尽的本分，踏踏实实地去做成几件事。知道自己需要什么，说明自己在成长；知道自己不需要什么，说明自己在成熟。成功不只是要善于抓机遇，而是要善于放弃诱惑。有所放弃，才能有所收获。每一个人要想有所作为，就要毅然地放弃一切诱惑和不适合自己的目标、计划和行动。

      ⑤天地悠悠，人生有限。人不可能同时走上两条不同方向的道路，不可能同时拥有春花和秋月，不可能同时拥有明星的鲜花掌声和隐者的清逸自在……总之，不可能把所有好处都占完。知足，就是知生命的缺陷，知人生的“不足”；知“不足”，就是“知足”。

                                                                                                                                          （选自2013年3月16日《渤海早报》，有删改）

①合作离不开竞争②竞争不是孤单无力的竞争③合作与竞争是统一的④合作与竞争是相矛盾的

    Businesses are finding more uses for Virtual Reality (VR) as the technology develops. VR is no longer only for gaming or enjoyment. An American company called Blue Goji is using VR to improve one's health by making exercise more fun.

    Blue Goji has offices in Austin, the capital of Texas. The company showed its cardiovascular (心血管的) workout machine, called the Infinity treadmill (跑步机), at the recent South by Southwest festival, an event held every year in Austin.

    A person using the treadmill wears a virtual reality headset when exercising. Before starting, the user tightens a belt to prevent falls. Then, the user plays a VR game while running on the machine. The game can transport the user into the virtual world, where he or she can be racing against virtual people.

    Recently, Leonardo Mattiazzi tested the Infinity treadmill. Mattiazzi said he had a strong feeling to actually get running and do something that pushed his limits. He said the experience was more interesting than running inside the gym without actually going anywhere.

    Constam said the active use of virtual reality helps solve a common problem while wearing a VR headset. She noted that a lot of VR experiences cause motion sickness because people are in motion during the game, but not moving in real life. But when the user is moving on the treadmill and in the game, the chances of motion sickness are reduced.

    However, users who tested the treadmill while wearing the VR headset each had a different experience. Constam said there generally is a learning curve for VR. The first time users feel lost, but "the more you do it, the more you get used to it," she said. Mark Sackler was a first time user. He said he felt a little sick at one point during the game. But he thought the experience was surprisingly realistic.

    After carefully studying the users' experiences, Blue Goji plans to make the treadmill available to the public in 2019.

读下面印度主要农产品产量在世界的位次表，完成下面小题。