2016年7月16日
写作
综合写作: Three possible theories of why sturgeon fish jump into the air
阅读：
1、They need to feed themselves by the insects in the air
2.They want to remove the parasites on the
scales
3.They are aggressive when the toursts' boats invade their terrtory.
听力:
1They don't eat in the summer since they are fed in winter with enough, and they are bottomed. they eat from the sea floor.