题目

Wilderness activity week, Finland Set off on a really wild adventure to Finland, where night is a distant memory during the endless days of summer. From your cottage, set high in the hills above Koli National Park, you can explore a perfect wilderness, and pull over at a lakeside beach whenever you like a dip（游泳）. Seven-night breaks cost from ￡899 per adult, ￡699 per child, including flights, accommodation, some meals and a guide.  The Adventure Company (0845 450 5311; www.adventurecompany. co. uk). Horseriding in the Tarn France Learn to ride, or perfect your horse-riding skil生物体的有氧呼吸和无氧呼吸都能产生的中间产物是（ ）A. 酒精 B. CO2 C. 丙酮酸 D. 乳酸