外研版（2019）必修3《Unit 3 The world of science》2021年同步练习卷（暑假训练）

一、单词拼写

• 1．The fresh air and quiet environment

  （治愈） him of his sleeplessness.
  组卷：3引用：2难度：0.7

  解析

• 2．

  （灵活的）hours for full-time jobs came top of the list for 85 percent of respondents.
  组卷：2引用：1难度：0.8

  解析

• 3．Jack is a

  （才华横溢的） expert in computers，and he always solves the complex problems in a few minutes.
  组卷：3引用：2难度：0.9

  解析

• 4．Professor Wang will be invited to tell the foreign friends about the

  （起源）of the custom.
  组卷：4引用：2难度：0.9

  解析

• 5．Having shown you around our school，we will introduce our most

  （先进的） science lab to you.
  组卷：2引用：1难度：0.8

  解析

三、翻译句子

• 16．

  ，it is now possible to create an intelligent walking house.
  就环境而言，现在有可能建造一个智能步行屋。
  组卷：1引用：1难度：0.9

  解析

四、阅读理解

• 17．For even the most sharp-eyed ornithologists （鸟类学家），a small bird can look much like another.But luckily，researchers have built an artificial intelligence （AI） model. "Our study provides the means of overcoming one of the greatest limitations on the study of wild birds—reliably recognizing individuals." said Andre Ferreira，lead author of the study.
     Ferreira began exploring AI's potential while in South Africa，where he studied the sociable weaver，a bird which works with others to build the world's largest nest.Ferreira wanted to understand each individual's contribution to building the nest，but it was hard through direct observation because they were often hiding in trees or building parts of the nest out of sight.This experience contributed to his building the AI model，which could recognize individual birds simply from a photograph of their backs while they were busy with nest-building.
     The model must be trained with thousands of labeled images in order to accurately identify individuals，but acquiring labeled photographs of birds is very difficult.Ferreira and other researchers finally overcame this challenge.They built feeders with camera traps and sensors.Most birds in the study populations already carried a tag （标签） similar to microchips which are put in cats and dogs.Antennae（天线）on the bird feeders read the identity of the bird from these tags and touched off the cameras.
     According to Ferreira，the use of the AI model could save on expensive fieldwork and spare researchers from procedures such as catching and marking animals. "It removes the need for the human to be a data collector，so researchers can spend more time thinking about the questions instead of collecting the data，" said Ferreira.
     The AI model is currently only able to re-identify individuals that have been shown to it before.The researchers are now trying to build more powerful AI models that can identify larger study groups of birds，and distinguish individuals even if the AI model have never seen them before.This would enable new individuals without tags to be recorded by the cameras and recognized by the computers.
  
  （1）Which of the following may trouble ornithologists most when studying wild birds？

  
  A．Tracking birds closely.
  B．Locating birds quickly.
  C．Identifying birds accurately.
  D．Marking birds without hurting them.
  （2）Why does the author mention Ferreira's work experience in South Africa？

  
  A．To explain the significance of studying wild birds.
  B．To introduce the living habits of sociable weavers.
  C．To inform us of the great potential of the AI model.
  D．To show the reason for developing the AI model.
  （3）What does "this challenge" mentioned in Paragraph 3 refer to？

  
  A．Attaching a tag to each bird.
  B．Obtaining labeled images of birds.
  C．Touching off camera traps and sensors.
  D．Training AI model to identify individual birds.
  （4）What can we learn about the AI model in the last paragraph？

  
  A．It has been adopted in longer-term studies.
  B．It needs improvement to identify more birds.
  C．It has helped record new birds without tags.
  D．It shows great potential in recognizing new birds.
  组卷：18引用：1难度：0.3

  解析