阅读下面材料，从每题所给的A、B、C、D四个选项中选出最佳选项。

Four New Cool Inventions

Mip

    Mip, a playful robot, was developed by a Canadian toy maker named Wowwee. It stands 19 cm tall. You can control it simply with your gestures(手势) or a smart phone. Mip can run, balance and dance on two wheels. It can also bring you a bottle of water.

Android Wear

    Google is developing a smart watch called Android Wear. The watch uses a touch screen and voice control. Simply say "OK, Google" to ask what ever you want to know. For example, say "OK, Google. Where's the nearest toy store?" Your answer will tell you the answer on Google Maps.

Le Pen

    Do you like listening to music while doing homework? If you do, you will like Le Pen. With a music player planted inside, Le Pen plays music while you write on paper. The music stops when you stop writing. So if you want to enjoy more of your favorite songs, keep on writing.

One wheel

In the near future you may find a new way to escape traffic: a self-balancing skateboard called One wheel. It can go as fast as 19km an hour. On a single charge(充电), it can take you as far as 7-10km.