在探究小鼠走迷宫获取食物的实验中，某组同学的设计方案如右图所示：在迷宫的出口处放一些小白鼠喜爱的食物，将小白鼠放进迷宫入口，记录小白鼠“尝试与错误”次数．据此回答：

黄宗羲在《明夷待访录》中指出历史上的赋税制度有“三害”：“有积累莫返之害，有所税非所出之害，有田土无等第之害。”他的观点以及所反映的历史现象被现代学者总结为“黄宗羲定律”。这一“定律”反映的古代赋税制度的弊端在于（    ）

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We sell delicious pizza all over the world. We now need a kitchen assistant for our new shop in Shanghai. He or she should have an interest in making pizza. More importantly, he or she should have working experience in a restaurant.

      He or she will have chances to learn making pizza in Italy. Our Shanghai shop will open next week. If you want to join us, please get in touch with Mr. Buratti right away. The telephone number is 010-89828882.