阅读下面短文，从每题所给的四个选项（A、B、C和D）中，选出最佳选项。
Sunshine Sports Centre
One of the most modem sports centers in town, the Sunshine Sports Centre is not just a sports club but much more!
Facilities
With a swimming pool for adults and teens, and a smaller one for children, our centre has something for all the members of the family．Parents can relax while children play in the water．For anybody who is interested in competitive sports, our volleyball, tennis and basketball courts are the ideal place to work off stress．
Whether you just want to keep in shape, lose some weight or build your strength, there's the gym with its super        modem equipment and three personal trainers to look after you and answer all your questions．They can also give you general advice about healthy eating and dieting．
Lessons
It doesn't matter if you' re five or eighty        five, there's something for you at the Sunshine Sports Centre! We offer personal training in all sports if you want it, but there are also group lessons for all sports if you prefer teamwork．
Kids and teenagers
Take advantage of our special offer for younger members．For members between five and sixteen years old, there are special lessons in water polo, competitive swimming and diving．There are many classes for all levels of swimmers, with a lifeguard on duty from 9:00 am when the pool opens until it closes at 7:00 pm．
Social events
Sunshine Sports Centre is not only for sport! You can enjoy a delicious meal at our restaurant or have a milkshake with your friends on the balcony overlooking the swimming pool and the courts．In addition, there are lovely gardens where families or friends can have a picnic! To celebrate a birthday, there is no better place than the Sunshine Sports Centre．
So, come on Sign up for Sunshine Sports Centre today!
In Sunshine Sports Centre __________

A．people can have birthday parties

B．lifeguards are on duty 24 hours a day

C．children are not allowed to swim alone

D．special lessons in diving are offered to adults

People can ask personal trainers for advice when they _________

A．learn to swim

B．sign up

C．build strength

D．play basketball

The main purpose of the passage is to _________

A．explain the rules of the sports centre

B．attract people to the sports centre

C．persuade people to play sports

D．show the benefits of sports