What<br/>are space agencies and companies aiming to do at present?() A: Recycle used space vehicles before they turn into debris. B: Develop technology to address the space debris problem. C: Limit the amount of debris entering space. D: Cooperate closely to retrieve space debris.

What are space agencies and companies aiming to do at present? 未知类型：{'label': 'questionDesc', 'content': '请根据材料选择正确答案。', 'isMemberControl': 0, 'type': 181} 未知类型：{'label': 'source', 'content': '2019年6月 六级 卷二 仔细阅读2', 'isMemberControl': 0, 'type': 181} A: Recycle used space vehicles before they turn into debris. B: Develop technology to address the space debris problem. C: Limit the amount of debris entering space. D: Cooperate closely to retrieve space debris.

A cell that engulfs and digests debris and invading microorganisms is known as ___________.

Which is not the meaning of “crumble”? A: Disintegrate B: Collapse C: To upgrade D: Debris

中国大学MOOC: A cell that engulfs and digests debris and invading microorganisms is known as phagocyte.

A cell that engulfs and digests debris and invading microorganisms is known as phagocyte. A: 正确 B: 错误

Much of the way, there were bike lanes available, albeit lanes that were often full of debris or other obstacles.

The earthquake left huge gaps in the city's streets. A: debris B: crevices C: buildings D: electric lines

Three years later, he is still paying off his ______. A: debts B: doubts C: debates D: debris

The ________ worn by astronauts is designed to keep them alive in outer space. A: debris B: gear C: clif D: hook