中学生辅导
（1）
Chinese researchers have successfully carried out a systematic test on a cutting-edge transportation system involving a high-speed maglev train running in a low vacuum pipeline in North China.
It is 1 first time that an integrated transportation system has ever been tested in the world. A series 2 tests will be carried out in the years to come.
According to reports, the test in Yanggao county of Datong, North China’s Shanxi province, resulted in a maglev train 3 (travel) at up to 130 kilometers per hour along a 2-kilometre test route.
A groundbreaking ceremony for the 4 (plan) laboratory for high-speed maglev 5 (vehicle) operating in a low vacuum pipeline 6 (conduct) on May 24, 2021.
The lab was designed 7 (provide) a testing ground for low-vacuum pipeline magnetic levitation (悬浮) technology. In Yanggao county, the lab will construct a comprehensive 60-kilometre test track 8 will be finished in three stages. The peak speed will 9 (eventual) be 1,000 kilometers per hour.
Modern superconducting magnetic levitation technology detaches (使分离) the system from the ground with vacuum-like inner tubes that greatly reduce air 10 (resist).
① systematic adj. 成体系的；系统的
② cutting-edge adj. 领先的
③ maglev train 磁悬浮列车
④ vacuum n. 真空
⑤ integrated adj. 综合的；完整统一的
⑥ groundbreaking adj. 开创性的；创新的
It is 1 first time that an integrated transportation system has ever been tested in the world. (Para. 2)
这是一个主从复合句。“It”是形式主语，真正主语是that引导的______________。
（2）
Scientists recently announced the world’s 1 (tiny) remote-controlled robots and they say one day robots like these may be able to work in areas too small for tools.
Last week, researchers 2 (reveal) details on several tiny robots. The tiniest is shaped like a crab 3 is just half a millimeter wide.
The robot can 4 (control) from a distance by using lasers. It is designed a bit like a 3D pop-up book. The basic shape for it is flat. The flat shape is 5 (attach) to a rubbery material. When the rubbery material is allowed to relax, the robot pops up into a standing crab.
This mixture of layers is the secret 6 the crab’s movement. The different layers give the material two positions that it can be in. When 7 hard glass layer is softened, the rubbery layer bends the material, but when the glass layer hardens again, it moves back to 8 (it) old position. The scientists call this “shape-memory”.
The hard glass layer can be softened by 9 (warm) it up with a laser. Because the robots are so tiny, their parts heat up and cool down very 10 (quick). In that way, the scientists can make them move in different ways.
① crab n. 螃蟹
② pop-up adj. 有立体活动图的
③ rubbery adj. 似橡胶的；有弹性的
④ layer n. 层；表层
The different layers give the material two positions that it can be in. (Para. 4)
这是一个主从复合句。that引导___________________，修饰________________。
（1）
【语篇解读】
本文是一篇新闻报道。文章介绍了中国成功测试了新型磁悬浮列车。
【答案解析】
1. the 考查冠词。序数词前常用定冠词the，the first time表示“第一次”。故填the。
2. of 考查固定搭配。a series of表示“一系列的”，故填of。
3. travel(l)ing 考查非谓语动词。result in sb./sth. doing sth.表示“导致某人/某物做某事”，应用动词-ing形式作宾语补足语。故填travel(l)ing。
4. planned 考查非谓语动词。设空处作前置定语，修饰“laboratory”，且二者之间是逻辑上的被动关系，且动作已完成，故填planned。
5. vehicles 考查名词复数。vehicle在此处指“火车”，表示泛指，且为可数名词，故填vehicles。
6. was conducted 考查动词时态、语态和主谓一致。设空处作谓语，主语是“A groundbreaking ceremony”，根据时间状语“on May 24, 2021”可知，时态为一般过去时，且主语为第三人称单数，故填was conducted。
7. to provide 考查非谓语动词。设空处作目的状语，应用动词不定式。故填to provide。
8. that/which 考查定语从句。设空处引导性定语从句，修饰先行词“a comprehensive 60-kilometre test track”，且在从句中作主语，故填that或which。
9. eventually 考查副词。设空处作状语，修饰谓语，故填eventually。
10. resistance 考查名词。设空处作“reduce”的宾语，应用名词。故填resistance。air resistance表示“空气阻力”。
【长难句分析答案】
主语从句
（2）
【语篇解读】
本文是一篇说明文。文章讲述了世界上最小的遥控机器人的相关情况。
【答案解析】
1. tiniest 考查形容词的最高级。根据设空处前的“the world’s”可知，设空处表示最高级意义，应用形容词的最高级。故填tiniest。
2. revealed 考查动词的时态。根据“Last week”可知，此处用一般过去时，故填revealed。
3. and 考查连词。设空处前后介绍了机器人的形状和大小，为并列关系，故填and。
4. be control(l)ed 考查被动语态。“The robot”和“control”之间是被动关系，且设空处前有情态动词can，故填be control(l)ed。
5. attached 考查固定搭配。be attached to意为“连在……上，附属于”。故填attached。
6. to 考查介词。the secret to为固定搭配，意为“……的秘密”。故填to。
7. the 考查冠词。根据设空处前的内容可知，机器人有很多层，而设空处特指坚硬的玻璃层，故填the。
8. its 考查代词。设空处修饰“old position”，故填形容词性物主代词its。
9. warming 考查非谓语动词。设空处在句中作介词by的宾语，应用动词-ing形式。故填warming。
10. quickly 考查副词。设空处修饰动词短语，表示“可以很快加热或冷却机器人的零件”,应用副词。故填quickly。
【长难句分析答案】
定语从句；positions
