1. Despite an abortive attempt in August to devalue the renminbi — a move that rocked global markets and was quickly abandoned by Beijing — China’s trade-weighted exchange rate was 8.5 per cent stronger in September than a year earlier, making Chinese exports less competitive.
2. It shifts your kid's weight to your shoulders and core instead of your back.
3. 单词beneficial 联想记忆：
4. Until Dawn
5. The world's first flying bicycle flew on November 9, 1961, when Derek Pigott of the University of Southampton flew in a bicycle with an airplane-like body. It was called the Southampton University Man Powered Aircraft (sumpac). Derek furiously pedaled the air-bike to get it off the ground. It then flew 1.8 meters (about 6 ft) above the ground over a distance of 64 meters (210 ft). While the flight was short and slow, it still does not change the fact that it was the first bicycle to fly and at the same time, the first human-powered flight.