Direct flight is also called nonstop flight.

Before the first nonstop flight made in 1949, it_______ necessary for all planes to land for refueling.

1.According to the passage, what kind of Olympic Games did China vow on Monday to hold? A: A green Olympic Games. B: A great Olympic Games. C: A non-smoking Olympic Games. D: A nonstop Olympic Games.

选词填空。constructive/ possessions/ incredible/ nonstop/ abused/ intentions/ impact/ reward/ take...for granted/ conform toOnce I understand that it is in my own interest to take care of it, I begin to make more ______choices.