题目

Isabel works in the city centre and likes painting and drawing in her freetime. She wants to practise her hobby in a small, quiet park near her office.Boscawen ParkThis small and peaceful park offers guided tours, given by the Environment Officers. It is about 30 minutes from the city centre by boat. There is a snack bar and gift shop.Mr. Martin wants to take his eight-year-old pupils to a park anywherewithin the city, with activities whichallow the children to read about localEast Bank ParkThis is a tiny, quiet park in the heart of the city, with gardens filled with sculptures, trees and flow地球处于一种稳定而安全的宇宙环境中，指的是 [　　] ①太阳很稳定②九大行星公转方向一致③九大行星公转轨道面几乎在同一平面上④小行星的公转方向与九大行星保持一致 A．①B．①② C．①②③D．①②③④