为防止乘人过多而引起超载，乘客电梯轿厢的有效面积应控制在标准允许范围内。()
参考答案：对
语法填空
Frederick William I, the king of Prussia, would never have imagined that his greatest gift 1._________
the Russian people would have such an 2.(amaze)_____________ history. This gift was the Amber
Room, 3.____________ was given this name 4._______________ several tons of amber were used to make 5._____________.
The amber which 6.(select)______________ had a beautiful yellow-brown colour 7.___________
honey. The design of the 8.________________ was in the fancy style popular in those days. It was also
a treasure 9.(decorate)________________ with gold and jewels, which took the country's best artists
about ten years 10. (make)_______________.
什么是乐观体验？乐观体验有哪些特征？
