Twenty thousand years ago a sheet of (ice) a thousand meters (thick) covered the

游客2024-01-05  9

问题 Twenty thousand years ago a sheet of (ice) a thousand meters (thick) covered the coastal region (which) the cities of Vancouver and Juneau (now are) located.

选项 A、ice
B、thick
C、which
D、now are

答案 C

解析
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