The Greens are from America. They are now 1 vacation in Beijing. This is their first visit to China. They are going to 2 in China for over two months. They want to visit some big cities, villages and famous places of 3.They want to learn some Chinese and taste some delicious Chinese food, 4.

    Mr. Green is a doctor. He will visit a famous 5 in Beijing. Mrs. Green is a school teacher. 6 teaches English in a middle school. She is going to visit some 7 and village schools. Their daughter, Jane is a middle school student. She studies 8 . She can speak a little Chinese. She would like to make some Chinese friends.

    They are going to 9 a lot of photos in China. When they come back to America, they can show them to their friends. They want Americans 10 more about China.

法拉第曾做过如下的实验：在玻璃杯侧面底部装一导体柱并通过导线与电源负极相连，直立的细圆柱形磁铁棒下端固定在玻璃杯底部的中心，往杯内加入水银。在玻璃杯的正上方O点吊一可自由摆动或转动的直铜棒，铜棒的上端与电源的正极相接，下端浸入玻璃杯中的水银中。由于水银的密度比铜大，铜棒会倾斜地与水银相连，此时铜棒静止，如图所示。这样，可动铜棒、水银、导电柱和电源就构成了一个回路。闭合开关S，则该实验可观察到的现象是（   ）

午休时间，同宿舍的同学休息了，但陈皓同学还在大声朗读英语。室友多次提醒，他却说：“学习是我的权利和自由，任何人不能干涉。”陈皓同学的观点是（    ）​