乌鲁木齐是我国向西开放的重要门户，从地理位置上看主要是因为(    )

①位于我国西部，深处亚欧大陆腹地

②是中国西部和中亚地区交流的纽带

③位于天山和阿尔泰山之间

④位于塔里木盆地的中部

阅读下面的文言文，完成下题。

    崔季舒，字叔正，博陵安平人。父瑜之，魏鸿胪卿。季舒少孤，性明敏，涉猎经史，长于尺牍，有当世才具。年十七，为州主簿，为大将军赵郡公琛所器重，言之于神武。神武亲简丞郎，补季舒大行台都官郎中。

    文襄辅政，转大将军中兵参军，甚见亲宠。以魏帝左右，须置腹心，擢拜中书侍郎。文襄为中书监，移门下机事总归中书，又季舒善音乐，故内伎亦通隶焉，内伎属中书，自季舒始也。文襄每进书魏帝，有所谏请，或文辞繁杂，季舒辄修饰通之，得申劝戒而已。静帝报答霸朝，恒与季舒论之，云：“崔中书是我你母。”转黄门侍郎，领主衣都统。虽迹在魏朝，而心归霸府，密谋大计，皆得预闻。于是宾客辐凑，倾心接礼，甚得名誉，势倾崔暹。暹尝于朝堂屏人拜之曰：“暹若得仆射，皆叔父之恩。”其权重如此。

    时勋贵多不法，文襄无所纵舍，外议以季舒及崔暹等所为，甚被怨疾。及文襄遇难，文宣将赴晋阳，黄门郎阳休之劝季舒从行，曰：“一日不朝，其闲容刀。”季舒性爱声色，心在闲放，遂不请行，欲恣其行乐。司马子如缘宿憾，及尚食典御陈山提等共列其过状，由是季舒及暹各鞭二百，徙北边。

    天保初，文宣知其无罪，追为将作大匠，再迁侍中。俄兼尚书左仆射、仪同三司，大被恩遇。乾明初，杨愔以文宣遗旨，停其仆射。遭母丧解任，起复，除光禄勋，兼中兵尚书。出为齐州刺史，坐遣人渡淮互市，亦有赃贿事，为御史所劾，会赦不问。武成居藩，曾病，文宣令季舒疗病，备尽心力。大宁初，追还，引入慰勉，累拜度支尚书、开府仪同三司。营昭阳殿，敕令监造。以判事式为胡长仁密言其短，出为西兖州刺史。为博戏于吏部，被责免官，又以诣广宁王宅，决马鞭数十。及武成崩，不得预于哭泣。久之，除胶州刺史，迁侍中、开府，食新安、河阴二郡干。加左光禄大夫，待诏文林馆，监撰《御览》。加特进、监国史。季舒素好图籍，暮年转更精勤，兼推荐人士，奖劝文学，时议翕然，远近称美。

（选自《北齐书•列传•卷三十九•崔季舒》）

阅读理解

    On a rainy night three years ago my dear mom went to accompany her Lord. She did it her way.

    I got the call at work, and l headed home quickly. Mom and Dad lived on a small farm that they had owned since I was seven. I hated going there every weekend. There was nothing for a young girl to do but watch the one station on the old TV set, if the weather allowed reception.

    My mom, on the other hand, loved the peace and quiet of the land. The place was rural, with no indoor plumbing or heat. We had a big wood stove in the kitchen that did its best to heat the little farmhouse, but it always seemed cold and too quiet to me.

    In the evenings, my mom and I would sit for hours singing in the little kitchen. I sang the melody and Mom harmonized. Her favorite song was “Moon River” and we sang it over and over. Mom told me stories about how when I was a little girl I could sing before I could talk.

    As time passed, I had my own children and went to visit them every week or two. The kids loved the farm and the tractor rides with my dad. Me, well, I still hated the silence of the farm. While my mom loved to sit at her kitchen table and look out at her garden and flowers and retell all the old stories, I missed the hustle and bustle of my life at home. But I sat there listening quietly as she reminisced.

    Now, I sat back in the silence and the silence was deathly so I finally leaned over to turn on an old radio. Music always comforted me. My heart skipped a beat. “Moon River” was playing on the radio. I sat there wordless, with a tear running down my cheek, as I listened to every familiar note.

在比例尺为1:2000000的地图上量得甲、乙两地的的图上距离是3厘米，那么甲、乙两地的实地距离是（   ）

有一个圆柱形物体，用弹簧测力计在空气中称重时，测力计的示数为14N；当把物体一半体积浸入水中时，测力计的示数为6N．把物体从弹簧测力计上取下投入水中静止时，物体受到的浮力是（　　）