1．Passengers are reminded not to leave their luggage(行李) unattended.
2．The absolute altitude(海拔) of our place is just 100 metres，which can never compare with that of the Tibetan Plateau.
3．People differ from one another in their ability to handle stress.
4．You may have noticed that the sun on a winter's afternoon is low on the horizon(地平线)．
5．I'm afraid we'll have to work extra hours，for there are still some problems remaining to be settled.
6．Justin is writing a book about his adventures(奇遇) in Tibet.I hope he can find a good publisher when it is finished.
7．We're looking forward to the holidays when we'll be travelling on camels through the Sahara Desert．
8．The lack of ecofriendly habits among the public is thought to be a major cause of global climate change.
9．The bad news made us more anxious for the matter.
10．They made maximum(最多的) use of the resources available.
