甲、乙两种物质熔化时温度随时间的变化曲线如图所示。从图中给出的信息，我们可以判断________物质是晶体，该晶体的熔点是___________℃，该晶体加热__________min后开始熔化。

Meeting your personal living needs is our number one choice.
All of our big apartments offer fully equipped kitchens(including dinnerware, cookware and utensils)and separate living and dining areas—ideal for holding informal business meetings or entertaining.
Telephone, Television & Internet Services
Our apartments include a private telephone line with voice mail system. including extended cable TV & high speed Interact service. Additional services such as fax or modem fines can be easily arranged.
Parking is available at many of the apartment locations for a cheap parking fee.
Housekeeping
Weekly housekeeping service is provided with your suite.
Recreation
Many locations have many fitness facilities, including swimming pools, exercise rooms, saunas(桑拿)and tennis courts.

What other fitness facilities can residents enjoy besides swimming pools, exercise rooms and saunas They can also enjoy ______ .