升高血糖浓度的激素为（）。 A.肾上腺素 B.胰高血糖素 C.生长激素

阅读理解。

根据短文内容判断下列句子的正误，正确的用A，错误的用B。

     For the average(一般性的) Americans or Canadians, a family vacation is real treat. For many families, camping is a popular vacation activity. Carnping is less expensive and more adventurous (冒险的) than

staying in a hotel. There are many national parks and private(私营的)campgrounds across both countries. A family can set up a tent or park their campers at one of many campsites.

     Another kind of vaction is a road trip.A road trip is where families pack up their cars and hit the road.Many families will visit relatives or friends in other parts of the country or enjoy another city. It usually takes several days to reach the destination (目的地). Families take their time, stopping for picnics.

    There are also many summer camps, especially for children.The camps can last from a week up to three months.Some camps are educational such as music camp or computer camp.However,most of the children are doing arts and crafts together. They stay in cabins and eat together in a big building. Most camps have a campfire at night. Everyone gathers around a small fire to sing songs and listen to stories.

( )1. Camping is very expensive in the United States and Canada.

( )2. When people are on a road trip, they might have a picnic lunch.

( )3. Some summer camps are educational such as music camp or computer camp.

( )4. Campers sing songs around a campfire.

( )5. Campers spend only a little time outdoor.

与服务对象初次接触后，社会工作者小李来到其居住的社区，向居委会了解其家庭和生活状况，并拟定了一份初次面谈提纲。小李的做法属于（）。

A.接案准备

B.接案面谈

C.面谈安排

D.问题界定

单选。

下面句子中的关联词用得恰当的是[ ]

A．尽管曹小三早就听说过师傅那手绝活，可是一直半信半疑。  

B．曹小三不但早就听说过师傅那手绝活，而且一直半信半疑。  

C．曹小三不是早就听说过师傅那手绝活，而是一直半信半疑。  

掺高效减水剂混凝土的收缩率比不大于（）

A.100%

B.110%

C.125%

D.135%

刀具磨损需要规定一个合理的磨损限度，即为（）。