X、Y两种元素组成的两种化合物甲和乙,已知:甲的分子式为XY3,甲中X的质量分数

题型:选择题

问题:

X、Y两种元素组成的两种化合物甲和乙,已知:甲的分子式为XY3,甲中X的质量分数为80%,乙中Y的质量分数为25%,则乙的分子式为(  )

A.X3Y

B.XY2

C.X3Y2

D.XY4

考点:构成物质的粒子—分子、原子、离子元素周期律
题型:选择题
用方框中所给词语的适当形式填空,使短文正确、通顺、连贯(每词限用一次)。
job,  chance,  fourth,  why,  live,   easy,  honest,   good,  in order to,  come out
     Good morning, ladies and gentlemen. I'm here today to share a good lesson with you. It is a true story
about an overseas student 1_____ in Germany.
     After years of hard work, this student graduated with amazing achievements. Everyone thought he was
going to get a good 2_____ easily and have a bright future. But to his disappointment, he was not even given
the 3_____ for an interview! The third time he was refused, he couldn't help telephoning the company to ask.
4_____ they didn't want him. The answer was simple."We don't offer jobs to 5_____ people in Germany."
    What was wrong, you might wonder? The truth is,shortly after he arrived in Germany, this clever student
found that it was 6_____ to skip buying subway tickets. So 7_____ save money, he often went without a
ticket. As a result, he had been caught without a ticker in the subway 8_____ times.
     From this story, we learn that we may get short-term benefits in dishonest ways, but the truth will 9_____
sooner or later and the cost is high. So remember: honesty is the 10_____ rule. That's all for my speech.
Thank you!
题型:选择题

在平面直角坐标系中,点(3,3)所在的象限是(  )

A.第一象限

B.第二象限

C.第三象限

D.第四象限

题型:选择题

—Could you lend me the book you bought last week?

—_______.[ ]

A. Yes, here you are

B. No, I can't lend it to you

C. It's not interesting

题型:选择题

Your performance in the exam didn’t reach the required standard ---       , you failed.

A.in a word

B.in my own words

C.in other words

D.of my word

题型:选择题

甲居于某址市.因业务需要,以其座落在市中心的一处公寓(价值210万元)作抵押,分别从乙银行和丙银行各贷款100万元。甲与乙银行于6月5日签订了抵押合同,6月10日办理了抵押登记;与丙银行于6月8日签订了抵押合同,同口办理了抵押登记。后因甲无力还款,乙银行、丙银行行使抵押权,对甲的公寓依法拍卖,只得价款150万元,乙银行、丙银行对拍卖款应如何分配?

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