男孩，生后1天，产前检查B超发现左肾积水。如决定手术治疗，最合理有效的手术方法是（）

患者男性，65岁。胃穿孔修补术后，肛门坠胀，大便次数增多1天。T38℃，腹部无明显压痛，未扪及包块。正确的是（）

A.合并前列腺炎

B.行B超检查可以明确诊断

C.诊断首先考虑盆腔脓肿

D.肛门指检可协助诊断

E.胃穿孔修补失败

在我国主要企业液压挖掘机销售统计中，在3月份4379台销量中，按机型分析，15吨级 276台(上月为135台)，20吨级2025台(1082台)，22吨级1777台(973台)，25吨级65台 (37台)，30吨级213台(117台)，35吨级11台(11台)，40吨级12台(4台)。各吨级销量 (除35吨级外)几乎比上月增加一倍。按企业统计，常州现代1007台占23.0%，大宇重工烟台862台占19.7%，小松山推777台占17.7%，合肥日立699台占16.0%，CATERPILLAR489台占11.2%，成都神钢346台占7.9%，北京现代京城工程机械有限公司96台占2.2%，小松常州32台占0.7%。按地区分析，我国江苏、浙江、山东和安徽四省分别销量为1050、527、459和325台，四省合计销量2361台，占总销量53.92%，其中江苏省当月销量突破千台。西部地区销量783台，占当月销量17.88%，特别是云南、新疆和四川省月销量突破百台，分别是141台、140台和104台，其次是重庆，广西、陕西和青海省，分别为77台、67台、64台和51台，销量增加。西部地区各省区当月销量均比上月有所增加。东北辽、吉、黑三省合计134台占3. 06%，分别为94台、20台、20台，销量有所增加。中部地区湖北140台，河南120台，江西110台，销量较高。四个直辖市中以上海市和北京市销量最高为289台和127台，其次重庆77台，天津市15台，合计508台占11.60%。当月出口3台。

3月份25吨级的生产数量占本月份生产总量的百分比是（）

A．5%

B．1%

C．3%

D．0.7%

下列哪项不是女性生殖器的自然防御功能

A． * * 杆菌分解糖原使 * * 呈酸性环境

B．盆底肌肉的作用使 * * 口闭合，防止外界的污染

C． * * 上皮在雌激素作用下增生变厚，增加对病原体侵入的抵抗力

D．子宫内膜周期性剥脱

E． * * 内同时寄居需氧菌、厌氧菌，形成一种平衡的生态

    Homebuyers nationwide are watching housing prices going up, up, and up. “How high can they go?” is the question on everyone’s lips? “As long as interest rates stay around 5 percent, there’s no telling,” remarked one realtor in Santa Monica, California.

“It’s crazy,” said Tim, who is looking for a house near the beach. “In 1993, I bought my first place, a two-bedroom condominium in Venice, for $70,000. My friends thought then that I was overpaying. Five years later, I had to move. I sold it for $230,000, which was a nice profit. Last year, while visiting friends here, I saw in the local paper that the exact same condo was for sale for $510,000!”

It is a seller’s market. Homebuyers feel like they have to offer at least 10 percent more than the asking price. Donna, a new owner of a one-bedroom condo in Venice Beach, said, “That’s what I did. I told the owner that whatever anyone offers you, I’ll give you $20,000 more, under the table, so you don’t have to pay your realtor any of it. I was tired of looking.”

Tim says he hopes he doesn’t get that desperate. “Whether you decide to buy or decide not to buy, you still feel like you made the wrong decision. If you buy, you feel like you overpaid. If you don’t buy, you want to kick yourself for passing up a great opportunity.”

Everyone says the bubble(泡沫) has to burst sometime, but everyone hopes it will burst the day after they sell their house. Even government officials have no idea what the future will bring. “All we can say is that, inevitably, these things go in cycles,” said the state director of housing. “What goes up must come down. But, as we all know, housing prices always stay up a little higher than they go down. So you can’t lose over the long run. Twenty years down the road, your house is always worth more than you paid for it.”

60．If Tim had sold his flat last year, he could have earned          .

A．$ 510,000                B．$ 440,000                C．$ 280,000                D．$ 160,000

61．Donna paid another $ 20,000 to the owner secretly because          .

A．she felt like offering 10% more                    B．secret money made low price

C．the owner asked for the money                  D．she was bored with bargaining

62．We can infer from Tim’s words in paragraph 4 that           .

A．homebuyers feel hesitate facing rising house prices

B．buying a house is always a great opportunity

C．homebuyers never make the right decision

D．both sellers and buyers become desperate

63．What is the author’s opinion about the housing bubble?          

A．It is something everyone hates to see

B．Only experts know when it will burst

C．It is unavoidable in the regular circles

D．It usually stays for about twenty years

正确错误综合统计命令calculate表达式表中，average（）函数用来求平均值。