根据班杜拉的学习理论，学习者通过强化的作用来增强学习效果的时期为()A．注意期 B．

在-（-8），-|-1|，-|5-3-2|，-4.3，-a这5个数中，负数共有（　　）

A．4个

B．3个

C．2个

D．1个

Our English teacher is      . He always kept us      in class.

A．amusing, amusing

B．amusing, amused

C．amused, amused

D．amused, amusing

保密室有两把不同的钥匙，分别由两个人保管。只有当两把钥匙都插入匙孔（相当于闭合开关）电动门才会打开，单独使用某一把钥匙不能使门打开。图中符合要求的电路是 [ ]

A.

B.

C.

D.

根据对话内容，将符合对话情景的句子写在对话的空白处，使对话恢复完整。其中有两项是多余的。

Robin: Leo, do you know Frank?

Leo: Yes, 1_____Robin: Does he look like you?

Leo: 2__      Also, I have brown hair but he has blonde hair.

Robin: 3            

Leo: Yes, he is.  He's more athletic than me.

Robin: Do you like sports?

Leo: 4_        But he plays volleyball and basketball too.

Robin: Is he a good student like you?

Leo: Yes, he is．5         

A.I don't know him.

B.No, he's taller and thinner than me.

C.Is he athletic?

D.Yes, we both play soccer.

E.He is more serious than me about schoolwork.

F.He is my good friend. No, he isn't.

建筑劳务企业岗位证书的主要种类有（）。

A.继续教育合格证书

B.管理人员岗位证书

C.职业技能岗位证书

D.特种作业人员操作证书

E.特种设备作业人员证书