若a+bi=（1+i）（2-i）（i是虚数单位，a，b是实数），则z=a-bi在

伏尔泰说：“人类如果没有崇拜的偶像，也会自己造一个出来。”对此，下列理解正确的是[ ]

A．人类没有偶像就会死亡

B．偶像崇拜是人类社会的正常现象

C．崇拜偶像是为了生活的更好

D．崇拜偶像能得到我们想要的东西

阅读下面短文，并根据短文内容，选出最佳答案。

        Mr Evans works in Sydney. Last week he had a two-week holiday, but he didn't know where

to go. He said to his friend Robert, "I hate the hot weather here, but I can't think of a cool place in

Australia. Where shall I take my holiday?"

         "That's easy," said Robert, "You can go to Moscow. Snow and ice are covering the ground there

now."

         Mr Evans agreed with his friend. He bought a plane ticket and soon arrived in Moscow. He was

having a good time there, but one day he got into trouble (麻烦). After lunch, he went to a park outside

the city. He noticed a dog following him when he was walking past a house. It was hungry and wanted

some food to eat. But Mr Evans had no food in his pockets. He tried to shoo (以嘘声吓走) it away, but

it began to bark at him. Just at that moment, he saw a stone on the ground. He tried to pick it up, but he

couldn't.

        "How strange these Russians are!" Mr Evans said to himself, "They do not tie up (栓住) their dogs,

but firmly (牢牢地) tie down the stones!"

1. Mr Evans is ________.

A. American

B. Russian

C. Australian

D. Chinese

2. Mr Evans didn't like the ________ in Australia.

A. hot weather

B. cool weather

C. rainy weather

D. cold weather

3. Mr Evans went to Moscow ________.

A. by train

B. by bus

C. by air

D. on foot

4. The word "bark" means "________".

A. 跳

B. 叫

C. 追

D. 咬

5. Mr Evans couldn't pick up the stone because ________.

A. it was too cold

B. it was too heavy

C. the Russians tied their stones to the ground

D. it was not a stone

2008年美国总统选举已拉开序幕。美国总统选举制度复杂，过程漫长。选举的主要程序包括预选、各党召开全国代表大会确定总统候选人、总统候选人竞选、全国选民投票选出总统“选举人”、“选举人”成立选举人团投票表决正式选举总统和当选总统就职典礼等几个阶段。当前民主党总统竞选人希拉里、奥巴马，共和党总统竞选人麦凯恩、罗姆尼等已展开激烈的角逐。无论谁最终入主白宫，都会对美国未来政局走向无疑将产生持久而重要的影响。

（1）根据材料说出美国的政体和政党制度。（2分）

（2）简要说明美国政党的主要职能及政党制度的实质。（4分）

（3）有人认为，美国总统具有“帝王般”的权力，是不受制约的。你的意见如何？

石英玻璃不能耐（）的腐蚀。

哪些情形，不予解除抵押？