[P9-49]
Ifyouwantthispain-killer, you'llhavetoaskthedoctorfora ______.
A) receipt
B) recipe
C) subscription
D) prescription
注：1. pain-killer 止疼片
2. prescription 药方
3. receipt 收据
4. recipe 菜谱；秘诀
[P9-50]
Somefishhaveagreater __________ foracidwaterthanothers.
A) tolerance
B) resistance
C) dependence
D) persistence
注：1. tolerance 忍耐，忍受
2. resistance 抵抗
3. dependence 依赖
4. persistence 恒定不变，坚持，持续
[P9-51]
Therewasonceatowninthiscountrywherealllifeseemedtolivein _____ withitssurroundings.