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According to the passage, it is believed that "Flores Human"__________ .

• A、was dwarfed by its enemies 

• B、could use language

• C、left a lot of fossils in the hot and wet environment

• D、reached Flores 40,000 years ago

In the second paragraph, the term "in effect" means __________.

• A、in fact 

• B、it is doubtful 

• C、often 

• D、without reason

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