在铜片上滴几滴某种盐溶液，片刻后再用蒸馏水洗涤，发现铜片上留有白色斑点，则该盐溶

Reading comprehension.

     In 1826, a Frenchman named Niepce needed pictures for his business. But he was not a good artist, so

he invented a very simple camera. He put it in a window of his house and took a picture of his garden. That

was the first photo.

     The next important date in the history of photography (摄影) was in 1837. That year, Daguerre, another

Frenchman, took a picture of his reading room. He used a new kind of camera in a different way. In his picture

you could see everything very clearly, even the smallest thing. This kind of photo was called Daguerreotype.

     Soon, other people began to use Daguerre's way. Travelers brought back wonderful photos from all around

the world. People took pictures of famous buildings, cities and mountains.

     In about 1840, photography was developed. Then photographers could take pictures of people and moving

things. That was not simple. The photographers had to carry a lot of film and other machines. But this did not

stop them, for example, some in the United States worked so hard. Mathew Brady was a famous American

photographer. He took many pictures of great people. The pictures were unusual because they were very lifelike

(栩栩如生的).

     Photography also became a kind of art by the end of the 19th century. Some photos were not just copies

of the real world. They showed ideas and feelings, like other art forms.

Answer the following questions according to what you read.

1. Who took the first photo?

    ____________________________________________________________________________

2. The Daguerreotype was a kind of photo, wasn't it? 

    ____________________________________________________________________________

3. If a photographer wanted to take pictures of moving things in 1840, what did he have to do? 

    ____________________________________________________________________________

4. Why was Mathew Brady famous? 

    ____________________________________________________________________________

5. When did photography become a kind of art? 

    ____________________________________________________________________________

按照《环境影响评价工程师职业资格登记管理暂行办法》第二十一条规定：环境影响评价工程师有下列( )情形之一者，登记管理办公室予以注销登记。

A．不具备完全民事行为能力的

B．有效期满未获准再次登记的

C．因环境影响评价及相关业务工作失误，造成严重环境污染和生态破坏后果的

D．在两个或两个以上单位以环境影响评价工程师的名义从事环境影响评价及相关业务的

下列与尿素代谢相关的叙述正确的是

A．将犬肝切除会引起血液中尿素含量升高
B．将犬肾切除会引起血液中尿素含量降低
C．增加饲料中的氨基酸会使犬血液尿素含量升高
D．促进嘌呤核苷酸分解会引起血液中尿素降低
E．促进嘌呤核苷酸分解会引起血液中尿素升高

外科病中的阳证类疾病的表现为

A．苍白

B．平塌

C．不热

D．肿

E．不痛

肥胖的成年糖尿病患者，初始的首选措施是（）

A.控制饮食，减轻体重

B.口服降糖药物

C.注射胰岛素

D.胰岛移植

E.胰岛素泵治疗