Windows中，在"日期和时间"属性窗口中不能直接设置（） A.年份 B.上午\下

窗体在屏幕上显示后有 ______ 种方法可以清除它。

A．1种

B．2种

C．3种

D．4种

—What do you think of Beijing?

—Wonderful. It ______ changed a lot during the last few years. [ ]

A. have

B. has

C. is

D. was

阅读理解。

     A volcanic eruption in Iceland has sent ash across northern Europe. Airlines have stopped or

changed the flights across the Atlantic Ocean, leaving hundreds of passengers stuck in airports.

     Grimsvom is one of the largest and most active volcanoes in Europe. What makes Grimsvom

different is that it lies under a huge glacier(冰川) of ice up to 12 meters thick. The hot volcano

heats up the ice above it, which then forms a layer(层)of water between the glacier and the volcano.

This layer of water puts pressure on the volcano, keeping it stable. As the water flows out from under

the glacier, the pressure lifts. The lava(岩浆) from the volcano then comes up to the surface. This is

exactly what happened today.

     Now, airlines have to make changes to their flights so as not to fly through the clouds of volcanic

ash. According to KLM,one of Europe's biggest airlines, airplanes cannot go under the cloud or over

it. Going through the cloud can result in ash getting stuck in the airplane's engines, causing damage to

the plane.

     The eruption has also caused problems for animals in Iceland. The volcano left ash and sharp

glasslike rocks all over the countryside. Farmers are keeping their animals inside to stop them from

eating ashcovered grass or the sharp object.  

1．What makes Grimsvom different from other volcanoes?  

A．It is below ice.

B．It lies under the sea.

C．It is the largest volcano.

D．Its lava affects the airlines.  

2．What keeps Grimsvom still?  

A．The slow flow of water.

B．The low water temperature.  

C．The thick glacier.

D．The water pressure.  

3．Which of the following is the result of the volcanic eruption?

A．People stop traveling in Europe.

B．Airlines suffer from the loss of planes.  

C．It becomes dangerous for animals to eat outside.

D．Farmers have lost many of their animals.  

4．This text is most probably taken from________.

A．a research paper

B．a newspaper report

C．a class presentation

D．a geography textbook

下述有关¹¹¹In-oxine-WBC制备正确的是（）

A.白细胞分离过程中动作要轻柔

B.标记过程中避免与金属离子的接触

C.¹¹¹In-oxine-WBC制备完成后应尽快注入机体

D.标记过程中需要一种脂溶性化合物8羟基喹啉

E.以上均是

某社会福利院的社会工作者小华正在为一位年过80的老人办理入院预约登记。此阶段小华可提供的专业服务有（）。

A.咨询服务

B.健康检查

C.经济状况评估

D.家庭网络调查

E.生活方式调查