题目内容：

In summer the extreme heat often makes people sweaty and restless. While people are annoyed by it, experts suggest summer is the best season to discharge(排放) your body’s toxins(毒素) and recover your energy.

One popular option is hot-stone massage(按摩). Therapists use smooth and heated stones, usually river rocks, to massage certain parts of the body, or place them on key points of the body. The warmth of the hot stones will improve blood circulation and also help relax muscles, while sweating is also believed to be good for discharging the body’s toxins.

Another popular option is hot-stone baths. The hot-stone bath will help the body discharge toxins and humidity (湿气) that accumulated during the last winter. Summer is the best season to build a good body. Rather than use water or steam to heat and wash the body, people simply wear a coat or something comfortable, and then lie on heated stone tablets made of hot stones, which are warmed to around 45℃. The body will gradually warm up and blood circulation will also be improved. More sweat will come out quickly. The sweat is smooth and fresh, not smelly like that released after sports activities. Such baths bring a number of health benefits, such as anti-aging, improved blood circulation and stress relief. The slimming effect of dieting can even be promoted.

Using hot stones for healing dates back to ancient times, but the modern renewal of hot-stone massage is generally credited to Mary Nelson, a native of Tucson, Arizona, America, whose trademark is “LaStone Therapy”.

The therapy is gaining wide popularity with many people, especially those who have jobs in cool air-conditioned rooms. The hot-stone therapy can help cure many diseases, including back pain.

1.What do people use to release toxins in our body according to the text?

A. Swimming in white water.    B. Living in cold winter.

C. Lying on the warm beds.    D. Discharging lots of sweat.

2.What can we know from the text?

A. There are no toxins and humidity in the body in summer.

B. Sports have greater effects on the health than hot-stone massage.

C. Using water of about 45℃ to wash the body is good for the health.

D. People should take advantage of summer to improve their health.

3.What can be learned about the hot-stone therapy?

A. It was invented by Mary Nelson, an American.

B. It successfully cured many people of cancer.

C. It is popular with people because of its excellent effects.

D. It can help people avoid sweating too much in hot summer.

4.Which of the following could be the best title for the text?

A. How to live comfortably in summer

B. A healthy and comfortable lifestyle

C. The amazing functions of the hot-stone therapy

D. The origin and development of the hot-stone therapy