问题
选择题
The children are full of ______. They have been playing all day long without resting.
A．energy
B．power
C．force
D．strength
答案
答案：A
词义辨析, energy主要指精力，能量。strength主要指力量，强度。power主要指动力，功率，电力。force主要指外力。根据题意这里指孩子们充满精力，故选A。