有以下程序main(){int i,j,X=0;for(i=0;iA.X=4 B.X

题型:单项选择题

问题:

有以下程序main(){int i,j,X=0;for(i=0;i<2;i++){X++;for(j=0;j<=3;j++){if(j%2)continue;X++;}X++:}printf("X=%d\n",X);} 程序执行后的输出结果是【 】。

A.X=4

B.X=8

C.X=6

D.X=12

考点:计算机等级考试C语言计算机二级(C)57
题型:单项选择题

结合所学知识回答问题。

(1)黄河下游的“地上河”是怎样形成的?

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(2)综合治理黄河需要采取哪些措施?

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(3)现在黄河下游断流现象日趋严重,想一想,造成黄河断流的人为原因有哪些?

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题型:单项选择题

阅读理解。

     The coast of the State of Maine is one of the most irregular in the world. A straight line running from

the southernmost coastal city to the northernmost coastal city would measure about 225 miles. If you

followed the coastline between these points, you would travel more than ten times as far. This irregularity

is the result of what is called a drowned coastline. The term comes from the glacial (冰川的)activity of

the Ice Age. At that time, the whole area that is now Maine was part of a mountain range that towered

above the sea. As the glacier descended, however, it applied enormous force on those mountains, and

they sank into the sea.

     As the mountains sank, ocean water charged over the lowest parts of the remaining land. And the

highest parts of the former mountain range, nearest the shore, remained as islands. Marine fossils found

here are 225 feet above sea level indicating the level of the shoreline prior to the glacier.

     The 2,500-mile-long rocky and jagged coastline of Maine keeps watch over nearly 2,000 islands.

Many of these islands are tiny and uninhabited, but many are home to blooming communities. Mt. Desert

Island is one of the largest, most beautiful of the Maine coast islands left behind by the glacier. Measuring

16 miles by 12 miles, Mt. Desert was very nearly formed as two distinct islands. It is split almost in half

by Somes Sound, a very deep and very narrow stretch of water seven miles long.

     For years, Mt. Desert Island, particularly its major settlement, Bar Harbor, has afforded summer

homes for the wealthy. Recently, though, Bar Harbor has become a new arts community as well. But the

best part of the island is the unspoiled forest land known as Acadia National Park. Since the island sits

on the border between two different geographical zones, the park supports the plants and animals of both

zones. It also lies in a major bird migration lane and is a resting spot for many birds.

     The establishment of Acadia National park in 1916 means that this natural monument will be

preserved and that it will be available to all people, not just the wealthy. Visitors to Acadia may receive

nature instruction from the park naturalists as well as enjoy camping, hiking, cycling, and boating. Or

they may choose to spend time at the museum learning about the Stone Age inhabitants of the island.

1. The large number of small islands along the coast of Maine is the result of _______.

A. the drowning of the Maine coastline

B. glacier's forcing mountains into the sea

C. the irregularity of the Maine coastline

D. ocean water's flooding the mountain range

2. From the passage, we learn that _______. 

A. the coastline of Maine is ten times longer after the Ice Age

B. there are more than 2500 islands along the Maine coastline  

C. Mt. Desert Island has been broken apart by a 7-mile-long water stretch

D. an arts community gave way to the summer homes on Mt. Desert Island      

3. What CANNOT be inferred about the Acadia Nation Park?

A. It welcomes all the people, rich or poor.

B. It has much appeal for bird-watching lovers.

C. It offers visitors both entertainment and education.

D. It is a border between the two geographical zones.

4. Which of the following might be the best title of the passage?

A. The past and the present of Maine

B. The formation of Maine coastline

C. Efforts for preserving national parks

D. Tourist attractions on Mt. Desert Island

题型:单项选择题

解决中国一切问题的“总钥匙”和关键是什么?

题型:单项选择题

好的领导至少应具有()的能力。

A、引起激励

B、对因情况而适当地进行激励有较高的理解

C、适应社会风气

D、鼓舞士气

E、人们对激励形成反应

题型:单项选择题

悬臂吊能否在旋转的过程中实现起升动作。()

A、不能

B、能

C、不确定

D、视条件而定

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