根据短文内容判断句子正（T）误(F)。
Welcome to our school. Our school is on Xianyang Street. It’s next to the Xinhua Library. There is a big garden across from our school. The payphone is between our school and the post office. There are three buildings in our school, the students' building, the teachers'building and a library. The teachers in our school are good. Our school yard is very beautiful. If you come to our school from the airport, take a taxi and go along the highway until you see a bridge. Go across the bridge and turn left. Then go straight along the Bridge Street. Our school is on the right. 

下列两幅图片最能共同反映的历史现象是（    ）

2011年8月31日，11号台风“南玛都”在福建省中南部沿海地区登陆，受其影响，广东中西部出现了较长时间的大范围高温天气，其主要原因是（   ）

I took about two hours (小时)          my homework.

如图所示，两个半径均为r的金属球放在绝缘支架上，两球面最近距离为r，A球电荷量为+Q，B球电荷量为﹣3Q，两球之间的静电力大小为F，将两球相互接触后放回原处，此时两球之间的静电力变为（   ）