Section 4
1. 一开始只有卫生间外面的地毯是_________，因为破裂的水管里的水;最后整个走廊都被淹了。
Initially only the carpeting outside the restroom was __________ by water from the burst pipe; eventually the entire hallway flooded.
diverted v. 转移
confined v. 有限的
scuttled v. 急走
cleansed v. 弄干净
drenched v. 湿透的.
2. 群居对狼和老鼠这样的动物有好也有坏：群居让动物来__________体温，但是让他们更___________被捕食者发现。
Communal nests have advantages and disadvantages for animals like wolves and mice: they enable the animals to _________ body heat, but leave them more __________ to discovery by predators.
insure v. 确保ined adj. 倾向于
maintain v. 维持erable adj. 易受攻击的
squander v. 浪费le adj. 有责任的
stimulate v. 刺激stant adj. 反抗
retain v. 保持ne adj. 免疫的