D. Because his parents like spending money buying gifts for them.

5. What does the underlined phrase "hot and cold" in Paragraph 2 refer to?

A. A kind of Hanukkah game.

B. A kind of Hanukkah gift.

C. A can of festival drink.

D. A riddle written on lights.

6. We can learn from the text that Hanukkah and Diwali ________.

A. share the same history and culture

B. are celebrated by both Jews and Indians

C. are both related to the legend of lights

D. encourage the families to do their prayers

7. What is the author's attitude towards Hanukkah and Diwali?

A. She enjoys celebrating both of them.

B. She does mind spending them.

C. She likes Hanukkah better.

D. She likes Diwali better.

　　C

　　Are you preparing for a big test? If so, you may want to go to play some basketball in between hitting the books. Doctors are starting to find more and more information that suggests a connection between exercise and brain development. Judy Cameron, a scientist at Oregon Health and Science University, studies brain development. According to her research, it seems that exercise can make blood vessels (血管), including those in the brain, stronger and more fully developed. Dr. Cameron is sure that this allows people who exercise to think better. As she says, "while we already know that exercise is good for the heart, exercise can actually cause physical changes in the brain."

　　The effects of exercise on brain development can even be seen in babies. Babies who do activities that require a lot of movement and physical activity show greater brain development than babies who are less physically active. Even a little movement can show big results. Margaret Barnes, a scientist, also believes in the importance of exercise. She thinks that many learning disabilities that children have in primary school or high school can result from a lack of movement as babies. "Babies need movement that encourages and excites their five senses. They need to set up a connection between motion and memory. In this way, as they get older, children will begin to connect physical activity with higher learning," says Margaret.

Older people can develop their brains as well. Cornell University studied a group