The research, published in Science, found the blood factors encouraged the growth of brain cells in old mice, and restored their sense of smell. The same chemical also improved muscle power of aged mice, the researchers found.

29. The underlined word in paragraph 1 probably means _________.

A. change C. speed

B. destroy

D. increase

30. Scientists in the US will test the discovery in humans with the aim of __________.

A. proving the possibility to live longer.

B. showing the importance of scientific research. C. publishing the study in Nature Medicine. D. treating an age-related disease successfully.

31. According to the studies, the blood from young mice benefits the old in certain ways except in_________.

A. memory C. fur color

B. muscle power D. brain cells

32. What’s the author’s attitude to the anti-ageing studies?

A. supportive C. negative

B. objective D. doubtful

D

Once school is out for the summer, students can begin their vacation trips in the great state of New Hampshire. Here are some low budget destinations. Cannon Mountain

It is not only the well-known oldest ski area in the US, but a top summer destination. The site offers views of the attractions of NH’s Old Man of the Mountain, and the nests of eagles from the surrounding mount. You can treat yourselves to not only the small train ride, but a walk through the US ski museum and a hike along the small road. Feel free to choose a picnic lunch, or eat in the hotel. To comfortably enjoy the Cannon Mountain trip, plan to bring $20 per person in your group.

Mount Washington Auto Road

No trip to New Hampshire is complete without taking a drive up to the Mount Washington

Auto Road. At $28 per vehicle and driver, plus $8 for each adult, you can arrive at the mountain top. You can start your trip to the highest top in the northeast, where you can spend a day climbing the rocks, exploring the weather station and the hiker rest area.Cruising on Lake Winnipesaukee