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CCEL G6 Weekly Quiz 0221
感谢您能抽出几分钟时间来参加本次答题，现在我们就马上开始吧！
_____ man over there has been elected ______ of the university.
Roses will not grow in such acid(酸性 的) ________.
Which of following underlined parts is different in pronunciation from the others?
Fill in the blanks with the Proper words. The initial letter is given 必须在空格内（小写）填写完整单词 An ecosystem i____1___ all the organisms and non-living things in an e____2____ and how they affect each other. In an ecosystem, all the organisms can live b___3___ they have their basic n___4__. However, when changes are m__5___ to an ecosystem, organisms may e___6_____ problems. These changes are c___7____ by humans, such as i____8____ an invasive species or by n___9___ events.
Why has Mount Qomolongma become the “world’s highest junkyard”?
