在开标时，投标文件出现( )的，应当作为无效投标文件，不得进入评标。
A．投标文件未加盖投标人单位盖章
B．投标文件的关键内容字迹模糊，无法辨认
C．投标文件载明的招标项目完成期限超过招标文件规定期限
D．组成联合体投标的，投标文件未附联合体各方共同投标协议
E．投标文件不符合招标文件中规定的实质性要求
参考答案：A,B,D
解析：除了选项A、B、D外，在开标时，投标文件出现下列情形之一的，也应当作为无效投标文件，不得进入评标：(1)逾期送达的或者未送达指定地点的；(2)投标文件未按照招标文件要求予以密封的；(3)投标人未按照招标文件的要求提供担保或者所提供的投标担保有瑕疵的。
Plants are very important living things. Life could not go on if there were no plants. This is 1 plants can make food from air, water and sunlight. Animals and men 2 make food from air, water and sunlight. Animals get their food by eating plants and animals 3 Therefore(因此), animals and men need plants in order to 4 This is the reason(原因) why we find that there are so many plants around us. If you look carefully at the plants around you 5 find that there are many kinds of plants. Some plants are large 6 others are small. Most plants are green.. Some plants have many small leaves. Others have only 7 large leaves. There are many kinds of leaves. Leaves are of 8 shapes(形状) and colors. Leaves are also different in other ways. Some leaves have short leaf stalks(叶茎)while others have long leaf stalks. Still others have 9 stalks at all. The edges(边)of leaves are also different. Some leaves have smooth(光滑的)edges. Some have wave(波状的) edges 10 the teeth of saw(锯).
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