萤石的主要化学成分是(),它的熔点较低。
参考答案:CaF2
场景(十) 甲欲购买乙的房屋,经协商,甲同意7天后签订正式的买卖合同,并先交6000元订金给乙,乙出具了收条,7天后,甲了解到乙故意隐瞒了该房屋相关证件不齐的情况,拒绝签订合同。 根据场景(十),回答下列问题:
按照我国《合同法》规定,一方故意提供虚假情况给对方造成损失的,应承担( )责任。
A.双倍赔偿
B.损害赔偿
C.违约赔偿
D.民事赔偿
There was nobody in the room. Lying on the desk ____ a pair of glasses as well as a letter addressed to his wife.
A.have
B.were
C.was
D.had