Books require hard work and practice and, like sports, they can be both a （）and a delight.
A、
encouragement
B、
dare
C、
challenge
D、
prodding
【正确答案】：C
【题目解析】：
读书需要艰苦的努力和实践，像运动一样，它们既是一种挑战又是一种乐趣。challenge挑战，符合题意。
Books require hard work and practice and, like sports, they can be both a （）and a delight.
Books require hard work and practice and, like sports, they can be both a （）and a delight.
encouragement
dare
challenge
prodding
读书需要艰苦的努力和实践，像运动一样，它们既是一种挑战又是一种乐趣。challenge挑战，符合题意。