饲养试验
参考答案：是在生产（或模拟生产）条件下，探讨与畜禽饲养有关的因子对畜禽健康、生长发育和生产性能等的影响或因子本身作用的一种研究手段。
根据句意及汉语或首字母提示，填写单词。
1. Our company has trips to suit all kinds of _____ (品味).
2. Alice picked up a _____ (钱包) on her way to school this morning.
3. Which one do you like better, the green one or the _____ (紫色的) one?
4. Different people have different t_____ on gift-giving.
5. Class is beginning. The students begin to take out the books from their s_____.
血吸虫病的传播途径是（）
A.直接通过空气飞沫传播
B.直接接触传播
C.经接触疫水传播
D.经吸血节肢动物传播
E.经污染媒介物间接传播
