政府采购的最低限额标准为( )。A．货物和服务单项或批量为50万元，工程为60万元

下列关于佛教与道教的比较，不正确的是[ ]

A．都是唯心论

B．都求来世幸福

C．前者是来自外国，后者是土生土长

D．都对后世文化产生深远影响

阅读理解。

     Two friends were waiting at the bus-stop for the last bus but they were afraid that they had missed it.

There were no cars passing by and not a single public telephone nearby to call for a taxi. They began to

feel nervous. It was already late. What could they do to get home?

     Then, as they looked up, they saw a bus approaching them slowly. The last bus! They had not missed

it after all.

     When the bus stopped at the bus-stop, the two young boys rushed up the bus in relief. Then, the bus

started moving. Only after a few minutes did the boys realize that something was seriously wrong.

     Firstly, the bus was moving far too slowly. Secondly, there was no conductor to collect their fare.

Thirdly, when they went to the front of the bus to check, there was no driver!

     With their hair standing on ends, they looked at each other with eyes wide open and started to scream.

     Then the bus stopped! The driver and the conductor appeared from behind the bus. They had been

pushing it!

1. Why did the two friends feel nervous?

A. It was very late at night.

B. They had missed the last bus.

C. They knew the last bus could not come.

D. There seemed to be no way for them to get home.

2. What can we learn from the underlined part in the 5th paragraph?

A. The boys were very frightened.

B. The boys' hair was falling down.

C. The boys felt extremely excited.

D. The boys were wearing strange hair styles.

3. The bus was moving very slowly because _____.

A. the driver was absent

B. it was running out of petrol

C. it was being pushed along by two people

D. the two boys had not paid for their tickets

对前立柱可采用纵向切割，然后用插入件对接，也可采用没有插入件的偏置对接。

下列关于小肠对铁吸收的叙述，错误的是

A．胃酸可促进铁的吸收

B．维生素D可促进铁的吸收

C．铁的吸收量与机体需要程度有关

D．亚铁易被小肠吸收

根据中国证监会的有关规定，下列各项有关上市公司提供担保的内容必须经出席董事会的2／3以上的董事审议通过后，方可提交股东大会审批的情形，符合规定的有( )

A．对外担保总额超过最近一期经审计净资产50％以后提供的任何担保

B．为资产负债率超过。70％的担保对象提供的担保

C．单笔担保额超过最近一期经审计净资产10％的担保

D．对股东、实际控制人及其关联方提供的担保，股东大会在审议该担保议案时，由出席股东大会的股东所持表决权的半数以上通过