? ? ? My sister loves bike riding she persuaded me to bought one too.So I did so.

? ? ? After my sister graduated from college,we take up a brave plan：take a bike riding arund the entire MeKong River.To avoid the trip become too boring ,we ask two of my sister's friends to join us .

? ? ? For this time's trip ,my sister is glod to make up schedule for us,but I'm a little nervors,because my sister has a shortcoming：she is so stubborn that she always thinks she is right.Also she wikl never care about the details,every time Icome up with good idea ,she always say I don't get the proper way .I have to agree with her ,because I know as long as she made up her mind ,nobody can influence her.

? ? Besides,one of my sister's friends went to rhe library to look for something about Mekong River.Finally,we get what we need in a small atlas.We know that MeKong River begins at a very high altitude,it's cold and slow .But after it go through some valleys it becomes much hotter and more quickly .However,MeKong River becomes slow and hot again before it enter the place it want to arrive where is full of placier,in the southern of China.

? ? We were completely shocked,we can't wait for this trip.