《荀子·大略》有这样的记载：“天之生民，非为君也，以为民也，故古者列地建国，非以贵诸

如图所示，以下关于电路的说法不正确的是

A．当只有S闭合时，L₁、L₂、L₃三灯串联

B．当S、S₁、S₂都闭合时，L₁ 、L₂ 、L₃三灯并联

C．当只闭合S、S₁时，则灯L₁ 、L₂发光

D．当只闭合S、S₂时，则只有灯L₃发光

用所给动词的 适当形式填空。

1. I'm sorry ______ (say) that there's nothing ______ (eat).

2. This afternoon the biggest football match of this year ______ (be) on TV.

3. Mr. Wu ______ (see) the film before.

4. It is ten years since I ______ (leave) my hometown.

5. You need something ______ (drink), don't you?

6. Either he or I ______ (be) right.

7. No ______ (smoke) in the hospital, please.

8. He would take out his money and ______ (pay) for the bill.

9. It's time for rest; let's stop ______ (have) our lesson.

10. What color do you decide ______ (buy)?

HIV病毒感染后眼部可能出现以下哪种肿瘤（）。

A.Kaposi肉瘤

B.Krukenbetg肿瘤

C.Wilms瘤

D.Pancoast瘤

E.Crohn病

下列不属于水泥混凝土路面施工中常见质量控制关键点的是( )。

A．锯缝时间和养护的掌握

B．混凝土的摊铺、振捣、成型及避免离析

C．混凝土材料的检查与试验

D．路面施工机械设备配置与组合