阅读下列短文，从每题所给的A、B、C和D四个选项中，选出最佳选项。
A
From sleep machines to Al-controlled house cleaning robots, a wide variety of advanced technologies and products are being exhibited at the 4th China International Import Expo (CIIE) in Shanghai. Here are some products you don’t want to miss.
Electric bicycle Brina 2
For many people, a daily commute (通勤) is often a source of headache. Emove Inc, an exhibitor from Argentina, has presented electric bicycle Brina 2 as a solution. Running on long-range batteries, the e-bike has a maximum speed of 25 miles per hour. Almost all the components are designed within the carbon fiber frame. Its scientific design makes the ride more stable and comfortable than other conventional e-bikes.
AI robot — a right-hand assistant for life and production
AI robot from AgileRobotsAG, a leading intelligent robotics company from Germany, helps make life and work easier. With the ability to synthesize (综合) and adjust motion tracks in real-time, the robot is a great assistant. For instance, it can aid humans in tasks like loading and unloading, polishing and quality inspection.
Power-PROXT — a reliable stretcher bed
Power-PROXT is an electric ambulance stretcher bed designed by Stryker Corporation from the U.S.. Compared with traditional stretchers, Power-PROXT is driven by a high-speed motor that enables it to easily lift or lower a load weighing 318 kilograms within 2.4 seconds. More importantly, it can smoothly and safely lift and move, providing greater safety for patients.
Sleeping cabin — a night guard for sound sleep
A recent study found that more than two-thirds of surveyed university students in Brazil are experiencing poor sleep quality.The sleeping cabin made by The Dow Chemical Company from the U.S. can provide its users a better sleep. As a combination of great material and technology, the cabin can provide customers with a deeper and more refreshing sleeping experience.
21. Which product most probably interests a factory manager?
A. Brina2. B. AI robot. C. Power-PROXT. D. Sleeping cabin.
22. What can Power-PROXT be used for?
A. Travel to work. B. Quality control. C. First aid. D. Sleep improvement.
23. Which word can best describe these products?
A. Cutting-edge. B. Eco-friendly. C. Cost-effective. D. Efficiency-enhancing.
