14 Communal nests have advantages and disadvantages for animals like voles and mice: they enable the animals to (i)_____ body heat, but leave them more(ii) _____ to discovery by predators.
Blank (i) Blank (ii)
A. maintain D. liable
B. squander E. vulnerable
C. stimulate F. resistant
对于像野鼠和田鼠这样的动物老说,共享巢穴有优点也有缺点:它可以使他们保持体温,但是却也使得他们更容易被捕食者发现。