托福寫作
綜合寫作：
1. Osteriod 紀元物種大滅絕有三種假說： 1 由氣候變冷冰川形成導致的海平面降低， 2 由隕石撞擊導致塵埃遮蔽太陽光; 3 由于太陽輻射加劇
教授認為三種假說都有weakness 1 ice sheet formation is slow and gradual but extinction happens at early age of process when sea level has not yet dropped; 2 no evidence support; 3 based on the assumption that t**** lives on the surface of ocean, which is not proved
獨立寫作：
if you have chance to change one of below to improve health, which would you choose. 1. food eaten, 2. amount of excercises, 3. amount of stress in life