根据《招标投标法》的规定，下列关于投标保证金的有效期表述不正确的是( )
A．不同类型的招标项目，对投标保证金有效期的规定各不同
B．工程建设项目施工投标保证金有效期应当超出投标有效期30天
C．工程建设项目货物投标保证金有效期应当与投标有效期一致
D．从投标保证金的用途可以看出，其有效期可多于或少于规定的投标有效期
参考答案：D
解析： 从投标保证金的用途可以看出，其有效期原则上不应少于规定的投标有效期。不同类型的招标项目，对投标保证金有效期的规定各有不同。在招投标实践中，应根据招标项目类型，按照其适用的法规来确定投标保证金的有效期。《工程建设项目施工招标投标办法》第37条规定，投标保证金有效期应当超出投标有效期30天。《工程建设项目货物招标投标办法》第27条规定，投标保证金有效期应当与投标有效期一致。
| 阅读下面短文，把A-D四个句子填入文中空缺处，使短文完整、正确，然后完成第5小题。 | |
| A recent report from Dazhou Daily says about 18% of Dazhou teenagers can have problems with their minds (内心, 精神). 1______ Others have trouble getting on well with people like their parents and classmates. Zhang Qiang, a Junior 2 student from Dazhou, could not understand his teachers in class and was doing badly in his lessons. He was afraid of exams. 2______. Another student, a 15-year-old girl called Wu Yan from Guang'an often argued with her classmates even her parents 3______. She became so annoyed about them that she started to cut her finger with a knife. However, many students who have problems won't go for advice or help. Some think they will look stupid (愚蠢的) if they go to see a doctor. Others don't want to talk about their secrets. 4______, here is some advice: ●Talk to your parents or teachers often. ●Take part in group activities and play sports. ●Go to see a doctor if you feel unhappy or unwell.
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| 5. From the passage we know teenagers have problems with their minds because of ______. | |
| A. their study B. getting on with other people C. their hobbies D. A and B |
