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类型:用单词的正确形式完成短文
难度系数:0.65
所属科目:初中英语

properly  look for  call  pick up  type

“Which is the right bin(垃圾箱) for my garbage (垃圾).” This may be the most-asked question in Shanghai since it started a new garbage-sorting(垃圾分类) program on July 1. When learning about the four 1. of garbage-wet, dry, recyclable and harmful, many people might not be clear about how to 2. sort it.

To help people work it out, China’s tech companies are giving a hand. For example, if you want to throw away a milk tea cup, you can just open a mini app(小程序) in WeChat or Alipay and 3. “milk tea cups”. The app will give you the answer right away. Soon, you might do it in an easier way. Maybe you can just take a photo of the garbage and then be told where it should go.

This kind of technology 4. image recognition(图像识别). It uses artificial intelligence(AI,人工智能). Many companies around the world are making garbage-sorting robots that use this technology. For example, AMP Robotics in the US has made a robot that can sort food and drink packages (包装) . By “seeing” pictures on the packaging, the robot will 5. the rubbish and put it in the right place.

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y = sin x, x∈R, y∈[–1,1],周期为2π,函数图像以 x = (π/2) + kπ 为对称轴
y = arcsin x, x∈[–1,1], y∈[–π/2,π/2]
sin x = 0 ←→ arcsin x = 0
sin x = 1/2 ←→ arcsin x = π/6
sin x = √2/2 ←→ arcsin x = π/4
sin x = 1 ←→ arcsin x = π/2

用户名称
2019-09-19

y = sin x, x∈R, y∈[–1,1],周期为2π,函数图像以 x = (π/2) + kπ 为对称轴
y = arcsin x, x∈[–1,1], y∈[–π/2,π/2]
sin x = 0 ←→ arcsin x = 0
sin x = 1/2 ←→ arcsin x = π/6
sin x = √2/2 ←→ arcsin x = π/4
sin x = 1 ←→ arcsin x = π/2

用户名称
2019-09-19
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