单项选择题 巴黎公社的政权性质是代表（）

未知题型 Collocations Complete the sentences with suitable expressions from the collocation box. Sometimes more than one collocation is possible. Adj + damage: considerable, enormous, great, serious, lasting, emotional, environmental Adj + comment: brief, critical, fair, negative, public V + damage: avoid, cause, prevent, reduce, suffer V + comment: address, decline, make, receive, seek achieve + N: aim, ambition, recognition, success, target flexible + N: approach, response, schedule, way In future wars, we could ________ to buildings and the death of millions of people if nuclear weapons were abandoned.

判断题 钢材中P（磷）含量较高时会导致钢材的热脆性增大。