场景(二) 某项目施工中，甲施工单位项目经理受高额回扣的诱惑，从乙供应商处购进了一批

Last winter vacation, our class went to Xiangshan for a trip.Though the weather was a little cold, it was sunny.

At six in the morning we met at the school gate.We took a bus there.On the bus, our monitor told us an interesting story.The story was about an interesting man.Then three girls in our class sang songs.We were very happy.

At about seven thirty we got there.It was a beautiful mountain.There were many visitors.Then we started to climb the mountain.The boys had a climbing race(比赛).Li Ming won the first prize.He got a blue hat.At about nine o’clock we met a famous singer.Qi Hui and Ma Yan even got his autographs.They were very excited.

We had lunch in the mountain.We brought food from home and ate together.

After lunch we went to the zoo, because the was a new member(成员) in the zoo.It was a cheetah(猎豹).It came from Africa.

Finally, we took the bus back to school.Although we were tired, we really had fun.

小题1:How was the weather on that day?

A．It was warm and sunny.

B．It was hot and sunny.

C．It was cold, but sunny.

D．It was cold and cloudy.小题2:They went to the mountain       .

A．by bike

B．by bus

C．on foot

D．by car小题3:It took them about       to get to he mountain.

A．one and a half hours

B．an hour

C．forty minutes

D．half an hour小题4:They had lunch       .

A．at home

B．at school

C．in a restaurant

D．in the mountain小题5:Which of the following is TRUE according to the passage?

A．They were quiet on the bus.

B．Two students got the singer’s autographs.

C．They bought food in the mountain.

D．The cheetah came from America.

一棵二叉树第六层（根结点为第1层）的结点数最多为_________个。

2CO（g）+O₂（g）⇌2CO₂（g）反应过程的能量变化如图所示．已知1molCO（g）氧化为1molCO₂（g）的△H=-283kJ/mol．请回答下列问题：

（1）图中A点表示：______；E的大小对该反应的反应热______（填“有”或“无”）影响．

（2）图中△H=______kJ/mol．

硬石膏和硅质白云岩与热稀盐酸作用不起泡。

电子调速器是由电子装置及液压伺服机构组合起来的透平控制系统。