2. 职称英语
  3. Some ecologists believe ______ more than 50 percent of existing species will be

Some ecologists believe ______ more than 50 percent of existing species will be

游客2024-01-05  89
问题 Some ecologists believe ______ more than 50 percent of existing species will be lost in the next 100 years.
选项 A、because
B、that
C、while there is
D、that there are
答案 B
解析
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