砂浆按胶结料成分不同分为可（） A.水泥砂浆 B.混合砂浆 C.石灰砂浆 D.粉煤灰

发包人应在收到现场签证报告后的（）h内对报告内容进行核实，予以确认或提出修改意见。

A．120

B．96

C．72

D．48

表2自来水价格表(节略)

16．表2是为某市政府制定的自来水价格该价格的制定

①利用了价值规律的调节作用

②发挥了政府宏观调控的职能

③表明价格形成应以政府定价为主

④有助于引导绿色消费观念的形成

A．①②③

B．①③④

C．①②④

D．②③④

阅读理解。

     We have met the enemy and he is ours. We bought him at a pet shop. When monkey-pox, a disease usually

found in the African rain forest, suddenly turns up in children in the American Midwest, it's hard not to wonder of the disease that comes from foreign animals is homing in on human beings." Most of the infections (感染)

we think of as human infections started in other animals" says Stephen Morse director of the Center for Public

Health Preparedness at Columbia University.

     It's not just that we're going to where the animals are ; we're also bringing them closer to us. Popular

foreign pets have brought a whole new disease to this country. A strange illness killed Isaksen's pets and she

now thinks that keeping foreign pets is a bad idea."I don't think it's fair to have them as pets when we have

such a limited knowledge of them" says Isaksen.

     " Laws allowing these animals to be brought in from deep forest areas without stricter control need

changing," says Peter Schantz. Monkey-pox may be the wake-up call. Researchers believe infected animals

may infect their owners. We know very little about these new diseases. A new bug (病毒) may be kind at first. But it may de- velop into something harmful (有害的). Monkey-pox doesn't look a major infectious disease.

But it is not impossible to pass the disease from person to person.

1. We learn from Paragraph 1 that the pet sold at the shop may _____.

A. come from Columbia

B. prevent us from being infected

C. enjoy being with children

D. suffer from monkey-pox

2. Why did Isaksen advise people not to have foreign pets?

A. They attack human beings.

B. We need to study native animals.

C. They can't live out of the rain forest.

D. We do not know much about them yet.

3. What does the phrase" the wake-up call" in Paragraph 3 most probably mean?

A. A new disease.

B. A clear warning.

C. A dangerous animal.

D. A morning call.

4. The text suggests that in the future we______.

A. may have to fight against more new diseases

B. may easily get infected by diseases from dogs

C. should not be allowed to have pets

D. should stop buying pets from Africa

甲公司和乙公司均为增值税一般纳税人，适用的增值税税率为17%。2010年甲公司和乙公司发生如下交易：
(1) 甲公司和乙公司为了缓解资金周转压力，于2010年2月签订资产置换协议，甲公司以库存商品和持有的A公司10%的股权投资换取乙公司出租的房产。
(2) 假定该交换具有商业实质且公允价值能够可靠计量。
(3) 2010年4月1日，双方办理完毕资产所有权划转手续，有关资料如下：
①甲公司换出：库存商品账面成本300万元，已计提存货跌价准备100万元，公允价值400万元；持有A公司股票划分为可供出售金融资产，账面价值为550万元(其中成本为500万元，公允价值变动为50万元)，按照当日收盘价格计算的公允价值为705万元。
②乙公司换出：投资性房地产的账面余额为800万元。其中成本为700万元，公允价值变动为100万元。该项投资性房地产是由自用房地产转换的，转换日公允价值大于账面价值的差额为60万元。交换日公允价值为1100万元。
③乙公司向甲公司支付银行存款73万元。
④甲公司换入房产继续用于出租。乙公司换入的库存商品仍作为库存商品核算，换入的A公司股票作为长期股权投资核算。

判断甲公司与乙公司进行的交易是否构成非货币性资产交换，并说明判断依据。

关系尺(A，B，C，D)和S(B，C，D)进行笛卡儿运算，其结果集为 (22) 元关系。3个实体及它们之间的多对多联系至少应转换成 (23) 个关系模式。

A．4

B．3

C．6

D．7