以下地理分界线，不属于亚欧分界线的是：（     ）

短文填空。根据短文内容，选择方框中所给的单词填空，使文章完整通顺。注意：1、不用改变形式；2、每词限使用一次。

either,  make,   signs,  them,  best,   provide,   who,   sure,  prevents,   others

    If you visit the animal shelter (收容所) in Salinas, California, you’ll see huge signs that have a picture of a dog and a cat on them. These ____  are put in front of the shelter to catch people’s attention. The signs ____ people interested in the shelter and encouraged them to visit it and maybe even take a cat or a dog into their homes.

Each year, the Salinas shelter accepts thousands of dogs and cats. The animals are____ lost ones or are left by people who can't take care of____ . Of all the animals, some of them are taken into new homes. Some____  are moved to other shelters. And, unluckily, some cannot be saved because they are too sick or are thought to be dangerous.

    Animal shelters ____  food, medicine, and safe places for animals. But they are not the ____ homes. The animals stay in small cages (笼子). The people____ work at shelters do their best to care for the animals, but the animals do not always get the attention or exercise they need.

    To prevent animals from becoming homeless, pet owners should take good care of their pets. Most pet doctors also suggest people make ____ their pets have a special surgery ( 外科手术). It____  animals from having more babies. And that reduces（减少）the number of homeless animals.

    Phyllis Ramberg,85,lives alone in Hyattsville,Maryland,in the same house for many decades.“Children keep asking me,‘When are you going to move to one of those retirement villages?'I say,‘No,no.My friends are here, my church is close,'”Ramberg said."I've got everything I need,right in this neighborhood."A year ago,Ramberg was able to take care of her backyard.This year,she just can't do it herself."When illnesses happen,you just don't have the capability that you thought you had before,"she said.

    That's where "Aging in Place",a non-profit organization,comes in.Founder Lisa Walker says she and her friends are among the seven percent of Hyattsville residents who are 65 or older."A number of my neighbors are also around my age,"Walker said."We started talking about some of the concerns we had.Several of us had had issues with parents that were getting older and they were far away from them and didn't know how to take care of them or get support."

    Seniors can call Walker's organization with a request,for example,asking for someone to shop for groceries,do small chores around the house or drive them to the doctor.Then a volunteer is assigned to provide the help.Most of the calls are for rides to the doctor."They take me to all my medical appointments,"said Louise Battiste,who is almost 90.

    Aging in Place volunteer Sally Middlebrooks says that a review of new volunteers' background,such as driving records and any criminal history is just as important as the training they receive.“We want the seniors,people we call neighbors,to be assured that they are with safe,reliable people who are also caring people,”Middlebrooks said.

    The volunteers also gain some benefits."I've learned how to stay connected to people,your family and friends," Walker said."Do I stay close to them?Do I try to keep myself devoted to the community,relating to people younger than I am?"Middlebrooks said."I'm learning a lot about this whole process of aging,and I'm learning,to my alarm,that it's very difficult.But I'm also meeting people who amaze me with their flexibility and their sense of humor and their ability to stay very much alive despite aches and pains."

    Not all volunteers are retired.Courtney Wattai,24,is a graduate student at American University in Washington who studies care giving and plans to have a career working with seniors."That's kind of what I want to do because I want to make sure I'm able to improve their lives,"Wattai said.“I want to be involved in their lives,not just sitting at a desk doing things.I thought this would be a good way to give tribute to my grandparents and what they had done for me and my brother."

    It makes Walker happy to see the younger generation stepping up.She hopes that's how residents in her neighborhood will always care for each other.

悠然亭记

明·归有光

    余外家世居吴淞江南千墩浦上。表兄淀山公，自田野登朝，宦游二十余年，归始僦居县城。嘉靖三十年，定卜于马鞍山之阳、娄水之阴。

    忆余少时尝在外家，盖去县三十里，遥望山颓然如积灰，而烟云杳霭，在有无之间。今公于此山日亲，高楼曲槛，几席户牗常见之。又于屋后构小园，作亭其中，取靖节“悠然见南山”之语以为名。靖节之诗，类非晋、宋雕绘者之所为，而悠然之意，每见于言外，不独一时之所适。而中无留滞，见天壤间物，何往而不自得？余尝以为悠然者实与道俱。谓靖节不知道，不可也。

    公负杰特有为之才，所至官，多著声绩，而为妒媢者所不容。然至今朝廷论人才有用者，必推公。公殆未能以忘于世，而公之所以自忘者如此。

    靖节世远，吾无从而问也。吾将从公问所以悠然者。夫“山气日夕佳，飞鸟相与还。此中有真意，欲辨已忘言”，靖节不得而言之，公乌得而言之哉？公行天下，尝登泰山，览邹峄，历嵩、少间，涉两海，入闽、越之隩阻，兹山何啻泰山之礨石？顾所以悠然者，特寄于此！庄子云：“旧国旧都，望之畅然。虽使丘陵、草木之缗，入之者十九，犹之畅然。况见见闻闻者也？”予获侍斯亭，而僭为之记。

病毒在寄主细胞中的生命活动主要表现是（  ）