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Four remarkable inventions

For more than half a century, the Consumer Electronics Show(CES) has been the place for companies and inventors to display their newest and coolest gadgets.

Here are our picks for some of the most interesting and creative inventions.

The Sweet Little Rolling Robot

Samsung has released Ballie, a tennis-sized robot that can follow you around the house, answer your questions, and entertain your pets. Since it's equipped with a camera, it can keep an eye on your home while you're away. It's like a smart assistant that goes wherever you do, rolling into your bedroom to ring your wake-up alarm, rolling to the kitchen to turn on the toaster and giving you the weather report as you brush your teeth.

The Insoles to Pick Up Your Pact

Any runner knows the right shoes are key to your speed. But Nurvv insoles promise more than mere cushioning. The insoles transmit data to a coaching app, which offers information on your technique and performance. It measures your foot strike and assesses your injury risk. The app then generates personalized workouts to set targets and help you beat your best speeds. Half marathon, here you come!

The No-Studio-Needed Yoga Class

Can't keep up your commitment to a yoga studio membership? The Yoganotch personal yoga assistant 1ets you drop into a virtual class any time you want. Follow along with a set series while3-D sensors tell you whether you need to straighten your legs a bit more. The idea is that it improves your form while reducing the risk of injury.

The Dau-Enhanced Grill

While working by sight, smell and feel, a chef may appreciate Weber's new Smart Grilling Hub. It can monitor your pork and turkey while an app gives advice about cooking technique and safe temperatures.

21. What can the Sweet Little Rolling Robot do?

A. Feed your pets.                                                B. Play tennis with you.

C. Assist you to do your housework.                         D. Take you wherever you want.

22. Which of the following is suitable for A runner?

A. Ballie.                    B. Nurvv                    C. Yoganotch.               D. Smart Grilling Hub.

23. What do we know about the Weber's invention?

A. It uses virtual reality.                                           B. It is convenient for cooking.

C. It makes meals for you automatically.                    D. It helps you do well in your yoga exercises.