（）是早期科林斯柱式的代表作。

方向变化，大小也不断交替变化的电流称为（）电流。

A、交流

B、直流

C、周期

D、不规

阅读理解

     Lake Champlain is on the borders of New York and Vermont. An explorer named Samuel De

Champlain is regarded as the first person to see a monster in it. This is reported to have happened in 1609,

but this may not have been the first sighting of the monster known as Champ.

     A reporter in the 1960's found that the sighting may not have been in the lake at all. It is more likely that

the first sighting was off the coast of the St. Lawrence estuary (河口).  In all likelihood, the first sighting of

the lake monster in the lake itself took place at Port Henry, New York, in 1819 by settlers in the territory.

The sightings continued, and in 1883 the sheriff (州长) of Clinton County, Nathan Mooney, described

witnessing " an enormous snake that was 25 to 30 feet in length".

     Sandra Mansi and her husband were vacationing in Vermont. When the lake monster appeared, they

took a picture of Champ. The picture was analyzed and it was concluded that the photo was real. It has

been speculated (推测) that the monster may be a creature known as a plesiosaur (颈项龙), which lived many centuries ago.

     Lake Champlain has depths of up to 400 feet, and is an outlet to the Atlantic Ocean. There is plenty of

food there, which supports the existence of such a creature.  Lake Champlain also has a water temperature

that is ideal for such a creature. In recent years a smaller creature has been seen with the large one. Could

there be a family of these creatures in the lake reproducing their yet unknown species now? Only time will

give us the answers that we seek.

1. Where did the first sighting of Champ in the lake most probably happen?

A. Off the coast of the St. Lawrence estuary.

B. At Port Henry.

C. In the Clinton County.

D. In Vermont.

2. Which of the following have the scientists concluded?

A. That the monster belongs to a known species.

B. That the picture taken by Sandra Mansi is real.

C. That the monster is the offspring of the plesiosaur.

D. When and where the lake monsters were first seen

3. What can we learn from the passage?

A. The snake-like monster may have swum there from the Atlantic Ocean.

B. Champ has had so many babies that they can be seen everywhere in the lake.

C. The first recorded story about the Lake Champlain monster was in 1609.

D. Enough food and a suitable water temperature is evidence that Champ can live there

合理配置资源的前提是（）

A.资源的稀缺性

B.拥有丰富的资源

C.完善的市场机制

D.完善的调控机制

销售企业要通过技术进步、信息化应用控员，加快推进（），简化计量工作流程。

A、流量计计量

B、地罐交接

C、手工量尺

D、地罐计量

在裂缝岩石储层中钻进时，宜采用（）钻井液体系。

A.正电胶型

B.油包水型

C.聚合物水基型

D.无土相型