综合写作
Marsupial和placenta哪种更适应环境？
听力观点：
M生出来以后，organ continue to develop,mother's milk protect them from infection
M control tem,they lower tem on purpose,这样可以less energy,less food
M和P一起生活在澳大利亚，但现在只有M，所以M在竞争中获胜。说明M比P更适应环境
独立写作
An effective leader should try to make others feel that they are part of the decision making process.
综合写作：
Carolina Bays的形成假说。
Reading:The Carolina Bays were formed by Meteorite impact.
The rim of one side is higher than the other side of the bay.
Mereorite explosion produced intensive heat to melt iron out of sand.
Meteorite explosion sufficient to form bulkyballs.
Listening:
If water flushed one side over period of time,it would cause the rim of one side higher than another.Scientists found underground water…
If the tempreture was so intensive,we could find glasses.But actually we haven’t found yet.The iron maybe produced by chemical reactions.
Bulkyballs can be generated by lightening.
独立写作：
It is important to make sure that others know about your strengths and accomplishments;if you are not so,you will be never successful in life.
