肝素抗凝血的主要机制是（）。 A.抑制X因子的激活 B.增强抗凝血酶Ⅲ的活性 C.去

骨巨细胞瘤X线特征（）。

A.X线片示：骨端膨胀性溶骨性破坏

B.X线片示：短骨膨胀，有蜂窝状骨吸收区夹杂钙化斑块

C.X线片示：长骨干骺端骨破坏和日光射线现象，有Codman三角

D.X线片录：骨膜板层状或葱皮状反应性骨形成和骨破坏

E.X线片示：自长骨干髓端突出的骨性病损

(C)

Can dogs and cats live in perfect harmony in the same home People who are thinking about adopting a dog as a friend for their cats are worried that they will fight. A recent research has found a new recipe of success. According to the study, if the cat is adopted before the dog, and if they are introduced when still young (less than 6 months for cats, a year for dogs), it is highly probable that the two pets will get along swimmingly. Two-thirds of the homes interviewed reported a positive relationship between their cat and dog.

However, it wasn’t all sweetness and light. There was a reported coldness between the cat and dog in 25% of the homes, while aggression and fighting were observed in 10% of the homes. One reason for this is probably that some of their body signals are just opposite. For example, when a cat turns its head away it signals aggression, while a dog doing the same signals submission.

In homes with cats and dogs living peacefully, researchers observed a surprising behavior. They are learning how to talk each other’s language. It is a surprise that cats can learn how to talk "Dog", and dogs can learn how to talk "Cat".

What’s interesting is that both cats and dogs have appeared to develop their intelligence. They can learn how to read each other’s body signals, suggesting that the two may have more in common than we previously suspected. Once familiar with each other’s presence and body language, cats and dogs can play together, greet each other nose to nose, and enjoy sleeping together on the sofa. They can easily share the same water bowl and in some cases groom (梳理) each other.

The significance of the research on cats and dogs may go beyond pets—to people who don’t get along, including neighbors, colleagues at work, and even world superpowers. If cats and dogs can learn to get along, surely people have a good chance.

What can we human beings learn from cats and dogs（）

A. We should learn to live in harmony.

B. We should know more about animals.

C. We should live in peace with animals.

D. We should learn more body languages.

Growing up together in Twin Falls, Idaho, Lisa Fry and Paula Turner never doubted their friendship would last forever. But after Fry married, moved to New York City and had a baby, her letters to Turner suddenly went unanswered. "Do you think I've somehow offended her?" Fry asked her husband.

Turner, meanwhile, had thought she was no longer important to Fry. "She's got a family now," she told herself. "We're just too different to be close like before."

Finally, Fry picked up the courage to call her old friend. At first, the conversation was awkward, yet soon they both admitted that they missed each other. A month later, they got together, laughing and sharing confidences.

"Thank goodness I finally took action," Fry says. "We both realized we were as important to each other as ever."

There are good reasons to value our friendships. Once a public-opinion research firm, Roper Starch Worldwide, asked 2007 people to identify one or two things that said the most about themselves. Friends far outranked（高于）homes, jobs, clothes and cars.

“A stable friendship carries a long history of experience and interaction and keeps us connected,” says Donald Pannen, executive officer of the Western Psychological Association. "It is what we should protect." However, says Brant R. Burleson, professor of communication at Purdue University, "The better friends you are, the more likely you'll face conflicts." And even the result can be what you don't want--an end to the relationship.

The good news is that most troubled friendships can be mended. Here's what experts suggest:

◆Swallow your pride.

◆Apologize when you're wrong--even if you've also been wronged.

◆See things from your friend's point of view.

◆Accept that friendships change.

Making friends can sometimes seem easy, says Yager. The hard part is keeping the connections strong and long. Her suggestion: Consider friendship an honor and a gift, and worth the effort to treasure and develop.

71．The first paragraph is written mainly to_______.

A．complain something to her husband

B．show Lisa Fry missed her friend

C．show family is more important than friendship

D．introduce the topic to be discussed

72．The underlined word “awkward” in the third paragraph probably means______.

A．uncomfortable      B．uninteresting      C．convenient        D．relaxed

73．Which of the following statements is TRUE according to this passage?

A．Once friendship is broken, there is no way to be repaired.

B．People don’t value friendship over other things

C．The more and better friends we make, the happier we are.

D．Lisa Fry and Paula Turner were as important to each other as ever.

74．Experts suggest that_________.

A．Making friends should be no difficult experience.

B．We should consider things for our friends first

C．We should not have to apologize if it is not our fault

D．Friendship should be one-way process and worth our effort.

75．Which of the following would be the best title for this passage?

A．A Broken Friendship       

B．Opinions on Friendship and Friends

C．What Is Good Friendship?   

D．How to Mend a Broken Friendship

船舶在规则波中作小角度横摇时，船舶的横摇周期与什么有关？（）

A.船长

B.船宽

C.吃水

D.船首线形

患者男，36岁，三个月前因外伤一上前牙脱落。口腔检查：左上1缺失，间隙正常，牙槽嵴无明显吸收。右上1牙冠1/2缺损，已露髓，探稍敏感，叩诊阴性，无松动。左上2牙冠良好，叩诊阴性，无松动。上下前牙牙龈轻度红肿，易出血，可见菌斑及牙石。余牙未见异常。

最适合的治疗方案是

A．覆盖义齿

B．桩核与双端固定桥

C．桩核冠与局部义齿

D．桩冠与局部义齿

E．根内固位体固定桥