如图，下列条件中：

（1）∠B+∠BCD=180°；

（2）∠1=∠2；

（3）∠3=∠4；

（4）∠B=∠5．

其中能判定AB∥CD的条件个数有（　　）

MY Travel Experience in China

    During the summer holidays I visited a variety of regions in China.

My first stop was Beijing and of course the Great Wall. Without question it lived up to my ____ (expect).

    After a long journey, I reached Yunnan. With____(it) minority villages and impressive landscapes, Yunnan had a lot to offer. One of my ____ (enjoy) moments in Yunnan was during my visit to The Tiger Leaping Gorge. The climb over the gorge was at times exhausting ____ always breathtaking. The views couldn't ____ (imagine) in their beauty and they ____ (leave) me with many great memories.

    After taking a boat from the mainland I arrived at ____ island province of Hainan. There I visited Baihua Waterfall. Floating on a pool of water at the base and looking up at the waterfall with a background of blue sky was one of the most ____ (relax) experiences of my life.

    Throughout China there are many ancient buildings and in particular ancient towns. Lijiang and Dali both have glorious ____ (example) of this. It was remarkable to step back in time and get an idea of____ China might have looked like all those years ago. I thought the buildings were beautiful and full of history.

    I had a wonderful time! China is both fascinating and beautiful!

材料一：以（洛阳）为中心，北抵（涿郡），南至（余杭），自北向南分为（永济渠）、（通济渠）、（邗沟）、（江南河）四段，连接了海河、黄河、淮河、长江、钱塘江五大水系，全长（2700）千米，是古代世界最长的运河。

材料二：复旦大学钱文忠教授在讲述唐朝对外关系时说：“一个伟大僧人西行取经的传奇故事，一条由信念、坚持和智慧浇铸而成的求知之路，一个民族朐襟开放、海纳百川的真实写照。”

材料三：北宋都城开封买卖通宵达旦，金、银、彩、帛等“每一交易，动辄千万”。南宋临安城“自大街及诸坊巷，大小铺席，连门俱是，无空虚之屋”。政府鼓励海外贸易，在主要港口设置市舶机构管理贸易。高宗末年，市舶收入岁达二百万贯，超过北宋治平年间岁入的两倍多。

材料四：马可．波罗，意大利旅行家。在元世祖时来华，居住了十几年，他口述下的某著作记述了大都的繁荣景象，激起了欧洲人对东方的向往。