下列不符合期货交易制度的是( )。A．会员结算准备金余额小于零，并未能在规定时限内

抛物线y=2（x-2）²-6的顶点为C，已知y=-kx+3的图象经过点C，则这个一次函数图象与两坐标轴所围成的三角形面积为______．

新修订的《环境空气质量标准》增设了PM2．5浓度限值和臭氧8小时平均浓度限值等。PM2．5是指空气中直径为2．5×10^-6m的固体颗粒或液滴的总称。下列说法错误的是

A．PM2．5分散在空气中可形成胶体

B．高空中臭氧层能够吸收太阳紫外线，为地球上的生物提供了天然的保护屏障

C．低空的臭氧是污染气体，会给人体造成伤害

D．化石类燃料的燃烧、含硫矿石的冶炼等过程都是造成SO₂污染的重要原因

Kincaid looked at his watch: eight-seventeen. The truck started on the second try, and he backed out, shifted gears, and moved slowly down the alley under hazy sun. Through the streets of Bellingham he went, heading south on Washington 11, running along the coast of Puget Sound for a few miles, then following the highway as it swung east a little before meeting U.S Route 20.

Turning into the sun, he began the long, winding drive through the Cascades. He liked this country and felt unpressed stopping now and then to make notes about interesting possibilities for future expeditions or to shoot what he called “memory snapshots.” The purpose of these causal photographs was to remind him of places he might want to visit again and approach more seriously. In later afternoon he turned north at Spokane, picking up U.S. Route 2, which would take him halfway across the northern United States to Duluth, Minnesota.

He wished for the thousandth time in his life that he had a dog ,a golden retriever, maybe ,for travels like this and to keep him company at home. But he was frequently away; overseas much of the time and it would not be fair to the animal .Still ,he thought about it anyway. In a few years he would be getting too old for the hard fieldwork. “I must get a dog then.” He said to himself.

Drives like this always put him into a sentimental mood. The dog was part of it .Robert Kincaid was alone as it’s possible to be—an only child ,parents both dead , distant relatives who had lost track of him and he of them, no close friends.

He thought about Marian .She had left him nine years ago after five years of marriage. He was fifty-two now , that would make her just under forty .Marian had dreams of becoming a musician ,a folksinger .She knew all of the Weavers’ songs and sang them pretty well in the coffeehouse of Seattle .When he was home in the old days, he drove her to the shows and sat in the audience while she sang.

His long absences—two or three months sometimes—were hard on the marriage .He knew that. She was aware of what he did when they decided to get married ,and both of them had a vague(not clear) sense that it could all be handled somehow. It couldn’t when he came from photographing a story in Iceland and ,she was gone . The note read, “Robert ,it didn’t work out ,I left you the Harmony guitar. Stay in touch.”

He didn’t stay in touch .Neither did she .He3 signed the divorce papers when they arrived a year later and caught a plane for Australia the next day. She had asked for nothing except her freedom.

51. Which route is the right one taken by Kincaid?

A. Bellingham— Washington 11—Puget Sound—U.S Route 20—U.S Route 2—Duluth

B. U.S. Route 2—Bellingham—Washington 11—Puget Sound—U.S Route 20—Duluth

C. U.S. Route 2—U.S Route 20—Duluth –Bellingham—Washington 11

D. Bellingham— Washington 11—U.S. Route 2—U.S Route 20—Duluth

52. Which statement is true according to the passage?

A. Kincaid’s parents were dead and he only kept in touch with some distant relatives.

B. Kincaid would have had a dog if he hadn’t been away from home too much.

C. Kincaid used to have a golden retriever.

D. Kincaid needed a dog in doing his hard fieldwork.

53. Why did Kincaid stop to take photos while driving?

A. To write “memory snapshots”

B. To remind himself of places he might want to visit again.

C. To avoid forgetting the way back.

D. To shoot beautiful scenery along the road.

54. What can you know about Marian?

A. She died after five years of marriage.

B. She was older than Kincaid.

C. She could sing very well and earned big money.

D. She was not a professional pop singer.

55. We can draw a conclusion from the passage that         .

A. Marian knew what would happen before she married Kincaid.

B. Kincaid thought his absence would be a problem when he married Marian.

C. It turned out that Marian could not stand Kincaid’s absence and left him.

D. After Marian left him, they still kept in touch with each other.

甲企业是从事房地产开发业务的企业，20×7年5月5日，甲企业与乙企业签订了租赁协议，将其开发的一栋写字楼出租给乙企业使用，租赁期开始日为20×7年6月10日。 20×7年6月10日，该写字楼的账面余额8 500万元，未计提存货跌价准备，转换后采用公允价值模式计量。6月10日该写字楼的公允价值为8 300万元。20×7年6月10日存货转换为投资性房地产时，该写字楼的公允价值与其账面余额的差额应( )。

A．借记“资本公积——其他资本公积”科目200万元

B．贷记“资本公积——其他资本公积”科目200万元

C．借记“公允价值变动损益”科目200万元

D．贷记“公允价值变动损益”科目200万元