单项选择题
A．这位伟人亲眼目睹了沙特阿拉伯的诞生，并且看到了它在一个关键历史时期的成长与发展。 B．这位伟人在关键的历史时期目睹了沙特阿拉伯的诞生，并且也看到了它的成长和发展。 C．这位伟人亲眼目睹了沙特阿拉伯的诞生，而它的发展和成长是在关键的历史时期。 D．在历史上有一个沙特阿拉伯的成长和发展的关键时期，而这位伟人只看到了它的诞生。
A．pride goes before a fall B．practice makes perfect C．no pains, no gains D．failure is tile mother of Success
A．there is no way to get children to help at home B．it is very difficult to make children responsible for housework C．the more encouragement and praise, the more responsible and helpful children will become D．children can be forced to help with housework