足少阴肾经的主治特点是 A．心病 B．心、胃病 C．肺、喉病 D．肾病

免疫比浊测定中，导致钩状现象的主要原因是

A．抗体过量

B．抗体亲和力差

C．抗原分子量偏大

D．待测抗原含量超出检测范围

E．体系中离子强度小

某妇女26岁，发现右侧卵巢肿物2年，1小时前突感右下腹剧痛伴恶心、呕吐，妇科检查：子宫（-），右附件有拳头大囊性肿物，边界清，活动差，左附件（-），其诊断是（）

A.肿瘤破裂

B.肿瘤感染

C.右附件肿瘤蒂扭转

D.肿瘤恶变

E.左附件炎性包块

On a sunny day last August, Tim heard some shouting. Looking out to the sea carefully, he saw a couple of kids in a rowboat were being pulled out to sea.

Two 12-year-old boys, Christian and Jack, rowed out a boat to search for a football. Once they'd rowed beyond the calm waters, a beach umbrella tied to the boat caught the wind and pulled the boat into open water. The pair panicked and tried to row back to shore. But they were no match for it and the boat was out of control.

Tim knew it would soon be swallowed by the waves. "Everything went quiet in my head," Tim recalls(回忆). "I was trying to figure out how to swim to the boys in a straight line."

Tim took off his clothes and jumped into the water. Every 500 yards or so, he raised his head to judge his progress. "At one point, I considered turning back," he says. "I wondered if I was putting my life at risk." After 30 minutes of struggling, he was close enough to yell to the boys, "Take down the umbrella!" Christian made much effort to take down the umbrella. Then Tim was able to catch up and climb aboard the boat. He took over rowing, but the waves were almost too strong for him.

"Let's aim for the pier(码头)," Jack said. Tim turned the boat toward it. Soon afterward, waves crashed over the boat, and it began to sink. "Can you guys swim?" he cried. "A little bit," the boys said. Once they were in the water, Tim decided it would be safer and faster for him to pull the boys toward the pier. Christian and Jack were wearing life jackets and floated on their backs. Tim swan toward land as water washed over the boys' faces.

“Are we almost there?” they asked again and again. "Yes," Tim told them each time. After 30minutes, they reached the pier.

小题1:Why did the two boys go to the sea?

A．To go boat rowing.

B．To get back their football.

C．To swim in the open water.

D．To test the umbrella as a sail.小题2:What does "it” in Paragraph 2 refer to?

A．The beach.

B．The water.

C．The boat.

D．The wind.小题3:Why did Tim raise his head regularly?

A．To take in enough fresh air.

B．To consider turning back or not.

C．To check his distance from the boys.

D．To ask the boys to take down the umbrella.小题4:How did the two boys finally reach the pier?

A．They were dragged to the pier by Tim.

B．They swam to the pier all by themselves.

C．They were washed to the pier by the waves.

D．They were carried to the pier by Tim on his back.

根据你对生活中物理量的认识，指出下列数据最符合生活实际的是[ ]

A．中学生课桌高约为80cm

B．两个普通鸡蛋中约为10N

C．人正常步行的速度约为12m/s

D．珠穆朗玛峰山脚今天的大气压约1.5×10⁵Pa

某单机容量为20万kW的火力发电站工程，业主与施工单位签订了单价合同，并委托了监理。在施工过程中，施工单位向监理工程师提出如下费用应由业主支付。

（1）职工教育经费：因该项目的汽轮机是国外进口的设备，在安装前，需要对安装操作的职工进行培训，培训经费2万元。

（2）研究试验费：本项目中铁路专用线的一座跨公路预应力拱桥的模型破坏性试验费8万元，改进混凝土泵送工艺试验费3万元，合计11万元。

（3）临时设施费：为修变电站搭建的民工临时用房5间和为业主搭建的临时办公室3间，分别为2万元和1万元，合计3万元。

（4）施工机械迁移费：施工吊装机械从另一工地调入本工地的费用1万元。

（5）施工降效费：

1）根据施工组织设计，部分项目安排在雨期施工，由于采取防雨措施，增加费用2万元。

2）由于业主委托的另一家施工单位进行场区道路施工，影响了本施工单位正常的混凝土浇筑运输作业，监理工程师已审批了原计划和降效增加的工日及机械台班的数量，资料如下：受影响部分的工程原计划用工2200工日，计划支出40元/工日，原计划机械台班360台班，综合台班单价为180元/台班，受施工干扰后完成该部分工程实际用工2B00工日，实际支出45元/工日，实际用机械台班410台班，实际支出200元/台班。

试分析以上各项费用业主是否应该支付？为什么？