1．Theyknowallthebest(路线)，andbestplacestocamp.2．Onthetopofthemountain，youcanseethesunriseupfromthe(地平线)．3．Atahigh(海拔)，thetemperatureisusuallylow.4．Andourpor

Question

1．They know all the best________(路线)，and best places to camp.

2．On the top of the mountain，you can see the sun rise up from the_______(地平线)．

3．At a high________(海拔)，the temperature is usually low.

4．And our porters carry your l________，which means that you can simply enjoy the experience.

5．We had a few a________moments before we knew the results of the exam.

6．WTO is an international o________，of which China is an important member.

7．Is English an________(选修的) lesson，or does everyone have to learn it?

8．When you are used to being busy，you may feel u______if you have nothing to do.

9．To finish the project ahead of time，we need to work an e________hour every day.

10．The hike costs $2 500 including all flights and________(食宿)．

Answer 1

1. route　      2. horizon　   3. altitude　       4. luggage　     5. anxious　

6. organisation　7. optional　   8. uncomfortable　 9. extra　       10. accommodation