患者大便变细，便意频繁，首先应行()A．乙状结肠镜检查 B．纤维结肠镜检查 C．直肠

有的同学可能对自己生活的社区不甚了解，或者了解不全面、不深入；有的同学对于社区的人和事缺乏深切的感受和体验；有的甚至没有了解和关心社区的意识和心愿，出现这样的情况，我们要认识到[ ]

A．我们的身份、任务和责任决定了我们不必感受社区

B．社区和社区生活是大人们的事，与我们无关

C．作为社区成员，我们有权利也有责任关注我们的社区和社区中的人和事

D．作为社区成员，我们还是学生、未成年人，只需要关注社区中发生的大事就行了

阅读下面的材料，从每题所给的A、B、C三个选项中，选出最佳选项回答问题或完成句子。

     Long ago, people lived on wild animals, fruits and other plants and they didn’t need to use money.

     As time passed, families had more products(产品) than they needed, such as animals and crops. So

they needed to trade(交易) with others. They began to use money to make it easier. However, it was not

like the money we use today. They used shells, rice, salt or large stones.

     During the 600s BC, people began using coins as money. Because they were easier to carry than

goods(货物), countries began to make coins as their money

     The Chinese were the first to use paper money, probably in the 11th century. An Italian traveler, Marco Polo, saw the Chinese use paper money when he visited China in the 1200s. After his travel, he told the

western people what he saw. But European countries didn’t start using paper money till the1600s.

     Today we have many ways to pay for things, such as coins, paper money and cards. Some prefer to

pay by card. That’s because paying with a card is easier and safer than carrying around a lot of “real”

money.

1. People began to use money because they ______.

A. lived on plants  

B. raised animals  

C. needed to trade

2. People used ______ as money during the 600s BC.

A. shells  

B. coins  

C. cards

3. Which country used paper money first?

A. Japan.  

B. USA.  

C. China.

4. The passage tells us the ______ of money.

A. history  

B. use  

C. collection

关于防火墙，下列说法正确的是（）

A.在设置防火墙确有困难的场所，可采用防火阀作防火分区分隔

B.在设置防火墙确有困难的场所，可采用防火卷帘作防火分区分隔

C.在设置防火墙确有困难的场所，可采用防火门作防火分区分隔

D.在设置防火墙确有困难的场所，可采用风幕作防火分区分隔

手机报凤凰聚焦业务资费为（）元/月。

A、12

B、10

C、8

D、5

以下哪个属于物理危害（）

A、金属碎片

B、重金属

C、包装材料粘合剂

D、寄生虫