国际公认的用水紧张线是人均水资源拥有量低于（）立方米，低于（）立方米为面临缺水，低于（）立方米为严重缺水。
参考答案：1700；1000；500
–What do you think of your visit to the Nature Park?
-- I really enjoyed it. It was ____ than I expected.
A．far more interesting
B．so more interesting
C．so more interesting
D．most interesting
下列结论中正确的是：（）。
A.A
B.B
C.C
D.D
