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1、2022-2023学年江西省清江重点中学高二（下）期中英语试卷一、阅读理解（本大题共15小题，共37.5分）ACES is produced by the Consumer Technology Association known as the place where many companies launch their latest technology offerings.Here is a look at some of the top products presented at CES 2022. Al-in-one communication Technology company

2、Anker announced the launch of an all-in-one" device designed to improve communications for employees working from home.The Anker Work B600 sits on top of the computer display like a traditional webcam.But it combines several elements of communication into one device that includes a camera，speak

3、er，microphone and a light. AirSelfie camera Electronics maker AirSelfie launched its latest self-flying camera designed to take " selfie pictures.The new device，called Air Pix，is a small，light camera that flies through the air and captures high-quality photographs and video.Air Pix can fly，fram

4、e and take pictures all by itself before landing back on the user's hand. Labrador's assistive robot Robot maker Labrador announced its Retriever robot designed to hold things and，as its name suggests，also retrieve（ a） things.The robot can be controlled by voice commands or from an app on a

5、phone.It can also be programmed based on an exact map of a users home.The Retriever is designed " to serve as an extra pair of hands and lighten the load of everyday tasks in the home ". Self-driving tractor American-based farm equipment manufacturer John Deere presented a fully self-drivi

6、ng tractor equipped with six different cameras and a series of sensors to guide the tractor through the fields.Farmers can control the vehicle and see the tractor's progress in real-time through a mobile device which is to help farmers do more work with less equipment and people. The company noted that such machines can help improve farming methods as the world's population grows and food demand is expected to rise 50 percent by 20501.  Which operator's product will teleworking staff be most i

16.(16分)如图所示,装置的左边是足够长的光滑水平台面,一轻质弹簧左端固定,右端连接着质量M=2m。的小物块A。装置的中间是水平传送带,它与左右两边的台面等高,并能平滑u=2m/s对接,传送带始终以u=2m/s的速率逆时针转动。装置的右边是一光滑曲面,质量m=mm=m。h=1.0m的小物块B从其上距水平台面高h=1.0m处由静止释放。已知物块B与传送带之间的动1=0.4,l=0.5m。摩擦因数μ=0.4,=0.5m。设物块A、B间发生的是对心弹性碰撞,第一次碰撞前物块A静止,取g=10m/s。g=10m/s^2。;(1)求物块B与物块A第一次碰撞前的速度大小;B(2)通过计算说明物块B与物块A第一次碰撞后能否运动到右边的曲面上;立置(3)如果物块A、B每次碰撞后,物块A再回到平衡位置时都会立即被锁定,而当它们再次碰撞前锁定被解除,试求出物块B第n次碰撞后的运动速度木小,锁定,而当它们再次碰

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