分解因式：x²﹣5x=____ ．

阅读下列短文，从每题所给的A、B、C和D项中，选出最佳选项。

Guilin is my favorite city in China because of its beauty, its waterways, its cafes, and most of all because I met my wife there. It is her hometown and we will both retire there in a few years.

Not only is Guilin a fascinating city, there are many interesting places to visit within a short drive from there. The Ling (sometimes called Lingqu) canal is the oldest canal in the world. It was built about 2,200 years ago and connects two major river systems, the Yangtze (to the east) and the Pearl River.

Longsheng Rice Terraces (龙胜梯田) is another manmade wonder that was built around 650 years ago. I have some photos of both of these places in my China Daily homepage Albums. Gudong Waterfall Park(古东瀑布) is another attraction that is worth visiting. The hike to the top of all these waterfalls isn’t very difficult and if you want, you can take a ride to the bottom on a personal rail car whose speed you can control with a brake.

If you want you can also climb up some of the waterfalls with the help of chains that are placed for the convenience of amateur climbers.

I have only been in Guilin during the winter and spring but my wife tells me it gets pretty hot in the summertime. That’s OK because I grew up in the Midwest of the US where it gets very hot and humid during the summer months. It rarely freezes in the winter and the spring and autumn are pleasant. Guilin receives a lot of rain, especially in late spring and early summer. Because of this there is lush(多汁的) plant life and many large trees in the area.

Being from California I’m used to having a car to get around. In fact, it’s practically a necessity in California. But in Guilin almost everything is within walking distance and if you need to go further, public buses are available every five minutes on the busy streets and every 10-15 minutes just about everywhere else. There are plenty of taxis too and most trips are only six yuan.

It’s a perfect place to retire.

A. Be a Good Listener               B. Care About the Small Acts

C. Begin a Conversation             D. Make Time for Friendships

E. Give a Hand to New Neighbors     F. Remember Their Names

5 Ways To Build Friendship with Your Neighbors

    ①____

    Often neighbors don't even know each other's names. But it's okay to be the one to break the ice. So as you see them at work in their yards, smile, wave and say hello. Ask how their kids are or what they think of the price at the local supermarket.

    ②____

    Your new neighbors may be feeling lonely and unsure, especially if they're far from home. Your help will be welcomed by them. Leave your telephone number to them. If they have any questions, they can call you.

    ③____

    Most of us find it difficult to remember people's names. Writing down the names of your neighbors and note about them, such as "Frank and Jill—Bob's neighbor," helps you remember their names. The next time we see Frank and Jill, we try to call them by name.

    ④____

    If you value a friendship with your neighbors, spend time with them. What better way to meet your neighbors than to invite them to a pool party or holiday open house? Chat with each for five minutes to get an idea of what your neighbors are like so that you can plan for food and music.

    ⑤____

    In a good relationship, it's really the little things that count. Help to bring in the mail for the elderly neighbor when there is a heavy rain. When your neighbor forgets to take in his rubbish cans, roll them back into his yard.