could be explained by chance alone.

　　Lead author Dr Beatrice Golomb, from the University of California at San Diego, said, "Our findings appear to add to a body of information suggesting that the composition of calories, not just the number of them, matters for determining their impact on weight."

　　This is not the first time scientists have suggested that chocolate may be healthy for us. Other studies have claimed chocolate may be good for the heart. Consumption of certain types of chocolate has been linked to some favourable changes in blood pressure, insulin sensitivity and cholesterol level. And chocolate, particularly dark chocolate, does contain antioxidants (抗氧化剂) which can help to wipe away harmful free radicals - unstable chemicals that can damage our cells.

　　However, while there's no harm in allowing yourself a treat like chocolate now and again, eating too much might be harmful because it often contains a lot of sugar and fat too. And if you are looking to change your diet, you are likely to benefit most from eating more fresh fruit and vegetables.

7．What does the underlined word "that" in Paragraph 1 refer to?

　　A．The study. B．The findings.

　　C．The researchers. D．The 1,000 US people.

8．The results of the research indicate that what matters the most is ________.

　　A．when we eat chocolate

　　B．how much chocolate we eat

　　C．what type of chocolate we eat

　　D．how often we eat chocolate

9．We can infer from the passage that both insulin and cholesterol ________.

　　A．do harm to humans' health

　　B．have impact on humans' heart

　　C．affect humans' weight

　　D．contain certain antioxidants

10．What is the best choice to keep healthy according to the author?

　　A．Eat proper amount of chocolate.

　　B．Eat chocolate time and again.

　　C．Eat more fruit and vegetables.

　　D．Eat chocolate and have exercise.

　　D

　　Bollywood dance is fun, a great workout and an important contributing factor towards the international popularity of Bollywood films. Bollywood dance classes offered in Long Island are a great option for those who wish to learn this dance form - not only for Long Island communities, but also for other Indians in New York, and people of other nationalities and cultures attracted by Indian dance.

　　You can join Bollywood dance classes

　　· to enjoy the fun of mixing Western and Indian dance styles，

　　·to achieve correctness of movement, energy, timing, and rhythm, or go professional，

　　·to just get fit or enjoy yourself.

Bollywood dance brings together several dance forms including Kathak, Jazz, Bhangra and Salsa. Though it is difficult to point out the precise definition, stylistic features, and geographical distribution of this exciting dance form, it is quite recognizable in both Indian and international circles. The songs for the dance are a kind of indirect expression through which the characters can express thoughts. Costume (服装) is an important part of this form of dance and