问题 单项选择题

下面是关于扫描仪分辨率的叙述,其中正确的是______。

A.扫描仪的分辨率是光学分辨率,它是指一英寸上分为多少个点

B.扫描仪的分辨率从光学部分便可以确定

C.光学分辨率是扫描仪的光学部件在每平方英寸面积内所能捕捉到的实际的光点数

D.在扫描图像时,扫描分辨率设得越高,生成的图像就越精细,生成的图像文件也越大,但插值成分也越多

答案

参考答案:D

解析: 扫描仪的分辨率要从三个方面来确定:光学部分、硬件部分和软件部分。也就是说,扫描仪的分辨率等于其光学部件的分辨率加上其自身通过硬件及软件进行处理分析所得到的分辨率。

阅读理解

Brownie and Spotty were neighbor dogs who met every day to play together. Like pairs of dogs you can find in any neighborhood, these two loved each other and played together so often that they had worn a path through the grass of the field between their houses.

One evening, Brownie’s family noticed that Brownie hadn’t returned home. They went looking for him with no success. Brownie didn’t show up the next day, and, although they made their efforts to find him, by the next week he was still missing, Curiously, Spotty showed up at Brownie’s house alone, barking and jumping. Busy with their own lives, they paid no attention to the nervous little neighbor dog.

Finally, one morning Spotty refused to take “no” for an answer. Ted, Brownie’s owner, was continuously disturbed by the angry, determined little dog. Spotty followed Ted about, barking all the time, then rushing toward a nearby empty lot and back, as if to say, “Follow me! It’s urgent!”

Eventually, Ted followed Spotty across the empty lot as Spotty stopped to race back and barked encouragingly. The little dog led the man to a deserted spot a half mile from the house. There Ted found his beloved Brownie alive, one of his legs crushed in a steel trap (圈套). Frightened, Ted now wished he had taken Spotty’s earlier appeals seriously.

Then Ted noticed something. Spotty had done something else besides leading Brownie’s human owner to his trapped friend. In a circle around the injured dog, Ted found some food remains of every meal. Brownie had been fed that week! Spotty had been visiting Brownie regularly, in the hope of keeping his friend alive. Spotty had actually stayed with Brownie to protect him from hunger and other dangers, and keep his spirits up.

Brownie’s leg was carefully treated and he soon got well again. For many years thereafter the two families watched the faithful friends chasing each other down that well-worn path between their houses.

小题1:At the very beginning, Ted paid little attention to Spotty because __________.

A.he was not free at the moment

B.he was sure Brownie would be OK

C.he didn’t like Spotty at all

D.his missing dog made him sad小题2:After Ted was brought where Brownie was trapped, he ___________.

A.managed to free his dog at once

B.was very thankful to Spotty

C.regretted not following Spotty earlier

D.was angry with the trap-maker小题3:The BEST title for this passage might be____________?

A.Dogs in Love

B.A Friend in Need

C.Human and dogs

D.Dogs Are Communicative小题4:We can infer from the passage that ___________.

A.humans and animals depend on each other for comfort

B.It’s not right to hunt for animals in any neighborhood

C.Ted has to take better care of his beloved dog later on

D.Brownie would have died without Spotty’s timely help

问答题