Page Rank算法存在的不足是（）。

A:与查询无关的静态算法 B:增加在线查询时的计算量，延长了查询响应时间 C:人们的查询具有主题特征，Page Rank忽略了主题相关性，导致结果的相关性和主题性降低 D:所有网页的Page Rank值是在线计算获得的

为了指定page1.html、page2.html和page3.html，可以使用以下哪些正则表达式？（）

A:^/page（1 B:2 C:3）\.html D:^/page[1-3]\.html E:^/page[123]\.html F:^/page[1-3]+\.html

Passage One
Psychiatric tests show that a well-balanced person gets much angrier when offended than an abnormal person does. At the New York State Psychiatric Institute, Dr. James Page and Professor of Psychology Carney Landis of Columbia University studied the reaction of 200 normal persons and 210 abnormal persons. They tested their reactions to annoying situations of every type and variety such as: being laughed at, being repeatedly disconnected on the telephone, accidentally hitting their thumb with a hammer, being worked on by a backseat driver, being told to "shut up" and mind their own business, discovering someone cheating in a friendly card game, etc. In almost every instance the anger reaction of the normal group was much more intense than that of the abnormal one.
"This," they reported, "is agreeing with other psychiatric findings. For one of the outstanding symptoms of mental unbalance is lack of emotion. So if you blow your top when you hit your head against a piece of furniture, or when your girlfriend goes out with another young man--don’t worry about it. It is just a sign that you are normal."

We can learn from the passage that （）

A:Dr. Page and Professor Landis used a special method to test abnormal persons B:what found was new to other doctors C:the research of Dr. Page and Professor Landis was to prove previous researches D:the purpose of the test was to find a way to cure abnormal persons

A Bluetooth device can be either a master or a slave and any of the devices within a ___30___can be the master. There is only one master and there can be up to ___31___ active slave devices at a time within a single network. In addition, a device may be a standby slave or a parked slave. There can be up to ___32___.parked slaves. If there are already maximum number of active slaves, then a parked slave must wait until one of the active slaves switches to ___33___ mode before it can become active. Within a network, all ___34___ communications are prohibited.

34（）

A:master-to-master B:Master-to-slave C:slave-to-slave D:Slave-to-master

A Bluetooth device can be either a master or a slave and any of the devices within a (1) can be the master. There is only one master and there can be up to (2) active slave devices at a time within a single network. In addition, a device may be a standby slave or a parked slave. There can be up to (3) parked slaves. If there are already maximum number of active slaves, then a parked slave must wait until one of the active slaves switches to (4) mode before it can become active. Within a network, all (5) communications are prohibited.

5（）

A:master-to-master B:master-to-slave C:slave-to-slave D:slave-to-master

A Bluetooth device can be either a master or a slave and any of the devices within a （71） can be the master．There is only one master and there can be up to （72） active slave devices at a time within a single network．In addition, a device may be a standby slave or a parked slave．There can be up to （73） parked slaves．If there are already maximum number of active slaves, then a parked slave must wait until one of the active slaves switches to （74） mode before it can become active．Within a network, all （75） communications are prohibited.

空白处（75）应选择（）

A:master-to-master B:master-to-slave C:slave-to-slave D:slave-to-master

Doing homework not only can help children master the knowledge they have learned, but aslo can train their abilities of doing the work alone, planning the time and doing the duties. But some children don’ t like to complete the work. Why There are some reasons.
Some children feel it is very difficult to do their homework, because they can’ t understand their teacher clearly, and can not follow their teacher’ s teaching process (过程). Maybe there is something wrong with their intelligence.
But some children’ s intelligence is normal. They are even cleverer, but they don’ t listen to the teacher carefully. It is hard for them to sit well and pay attention to anything. It needs to carry on the attention centralized(集中精力) training to help the children.
Some children love their teacher and then they like the subject. Their interest depends on the teacher who teaches them. So every teacher should be helpful and kind. It can make children love you and the subject you teach. So they can do their homework happily.
Doing homework can help children

A:master the knowledge B:train their abilities C:learn new lessons D:Both A and B

Doing homework not only can help children master the knowledge they have learned, but aslo can train their abilities of doing the work alone, planning the time and doing the duties. But some children don’ t like to complete the work. Why There are some reasons.
Some children feel it is very difficult to do their homework, because they can’ t understand their teacher clearly, and can not follow their teacher’ s teaching process (过程). Maybe there is something wrong with their intelligence.
But some children’ s intelligence is normal. They are even cleverer, but they don’ t listen to the teacher carefully. It is hard for them to sit well and pay attention to anything. It needs to carry on the attention centralized(集中精力) training to help the children.
Some children love their teacher and then they like the subject. Their interest depends on the teacher who teaches them. So every teacher should be helpful and kind. It can make children love you and the subject you teach. So they can do their homework happily.
Doing homework can help children

A:master the knowledge B:train their abilities C:learn new lessons D:Both A and B