20 To prepare for migration, animals are likely to ___...
单项选择题20 To prepare for migration, animals are likely to ________ A. be discouraged by difficulties. B. travel on open land where they can look out for predators. C. eat more than they need for immediate purposes. D. be repeated daily. E. ignore distractions. F. be governed by the availability of water. G. follow a straight line.
