单项选择题
A．因为孩子们已经与家庭脱离了经济关系，家庭经济得到保障，将从以保护为主过渡到为退休生活而储蓄。
B．由于孩子们在经济上从家庭中独立出来，家庭经济保障的重心将从保护转移到为退休后的生活储蓄。
C．随着孩子们在经济上从家庭中脱离出来，家里的财政安全主要靠退休工资，而不是保护措施。
D．因为孩子们已经不负担家庭，家里在经济上主要靠退休工资，而不只是保护老人。
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单项选择题 Any time during the day may be employed in physical exercise, but provided it is not too near meal hours（）
单项选择题 Since the beginning of the 21 st century, the government has started（）