甲、乙两家施工单位组成联合体投标，参与竞标某房地产开发商的住

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问题单项选择题

甲、乙两家施工单位组成联合体投标，参与竞标某房地产开发商的住宅楼建设工程。两家单位均具备承担该项目的能力和相应的资质、指定乙为联合体牵头人负责投标。中标后，在合同履行过程中，甲单位破产。

甲、乙联合体各方签订共同投标协议后，( )。

A．乙可以再以自己名义单独投标

B．甲不是牵头人可以再参加其他联合体在此项目中投标

C．乙是该联合体的牵头人可以以自己的名义邀请任何单位加入

D．甲、乙都不可以以自己名义单独投标

答案

参考答案：D

阅读理解

根据短文内容，判断正（T）误（F）。

Xiao Ming is a middle school student. He is a good boy, and he studies very hard. But his family is

very poor, because his mother got ill a few years ago, and his father has no job. He makes money by

carrying goods (货物) for other people. Life is very hard for them, and sometimes Xiao Ming can't

afford the school things.

When his teacher knew this, she called on her students to raise money for him. She asked them to

bring their saving-money to Xiao Ming and help him. All the students are kind and friendly. They are

very glad to do it. Xiao Ming is so thankful that he studies harder than before.

( ) 1. Xiao Ming is a good middle school girl.

( ) 2. His father lost his job.

( ) 3. His teacher called on his classmates to raise money for him.

( ) 4. He can afford the school things easily.

( ) 5. All of the students are very glad to help Xiao Ming.

单项选择题

植物学家将胡萝卜的韧皮部细胞分离出来，将单个细胞放入特定培养基中培养，获得了许多完整的植株，其依据的原理是（）。

A.细胞分裂

B.细胞特化

C.细胞分化

D.细胞增殖