根据课文内容，用方框中所提供的单词或短语的适当形式完成下列短文。 reach,
题型：填空题
问题：
| 根据课文内容，用方框中所提供的单词或短语的适当形式完成下列短文。 | |
They are to begin their trip from 2______ it begins to where it ends. Wang Wei is so stubborn that once she is 3______ to do something, nothing can change her mind. So though Wang Kun has different ideas about the trip, he has to give 4______. They are starting off on August lst and are 5______ their first stop on the trip in three days. Then they are continuing their journey for another five days 6______ they reach Tibet. They are taking enough food, water and clothes. Although their 7______ is very tight, they feel very excited about it. The Mekong River begins at a glacier on a Tibetan mountain 8______ an altitude of more than 5,000 metres. It passes 9______ deep valleys, 10______ across western Yunnan Province and finally flows into the South China Sea. |
(3+2x)N2+6xH2O 