本期主题：水

Across

4．artificial navigable waterway that connects bodies of water or is used for irrigation

5．artificial, man-made lake, especially for storing water supply

7．source of water issuing from ground

8．water spinning rapidly in a circle that produces downward sucking force at its center into which floating objects are pulledd

Down

1．natural stream of significant length and volume that follows definite course

2．very steep or perpendicular stream of water, often over precipice

3．inland body of standing fresh water, usually of considerable size

6．narrow waterway that passes between larger bodies of water

Answer:

1.river 2.waterfall 3.lake 4.canal 5.reservoir

6.strait 7.spring 8.whirlpool