Researchers have found that migrating animals use a variety of inner compasses to help them navigate. Some (1) by the position of the Sun. Others navigate by the stars. Some use the Sun as (2) guide during the day, and then (3) to star navigation by night. One study shows that the homing pigeon uses the Earth’s magnetic fields as a guide (4) finding its way home, and there are indications that various other animals, from insects to mollusks (软体动物), can also make (5) of magnetic compasses. (6) is of course very useful for a migrating bird to be able to switch to magnetic compass when clouds cover the sun; (7) it Would just have to land and wait for the Sun to come out again. (8) with the Sun or stars to steer by, the problems of navigation are more complicated (9) they might seem at first. For example, a worker honeybee (10) has found a rich source of nectar and pollen flies rapidly home to the hive to
A. away
B. on
C. with
D. out
| Dick was a twenty-year-old man. His father was a
teacher and taught chemistry in a middle school and his mother worked in a shop.
They lived a happy life until his parents died one night when suddenly an
earthquake broke out. Luckily his sister took him to see their aunt in the city
and they did not stay at home. Everything was destroyed in the earthquake and
the two children got into trouble. Thanks to their aunt who was not rich enough,
they grew up but they lived a hard life. His sister was so sad that she became a
nun (修女). After he finished middle school, he was introduced to an owner of a
hotel and began to work there. One day the young man fell to the ground while he was cleaning a window on the second floor. He was sent to hospital and the doctor l [简答题]什么是采区巷道布置、采煤工艺？
[单选题]口令中的突出主音是指（）
A.A、第一个字 B.B、第二个字 C.C、第三个字 D.D、重点字 [多项选择]2001年10月9日，甲公司向银行贷款500万元，应于同年12月10日向银行还款，由乙公司提供了保证，但银行希望再提供物的担保，乙公司又提供了抵押担保。贷款到期后，甲公司无力偿还。则银行：
A. 如果甲公司邀请丙公司以其公司的财产为该贷款提供了抵押，则银行既可以要求乙公司承担保证责任，也可以行使对丙公司的抵押权 B. 如果该抵押是甲公司以其自己的一辆汽车为该贷款提供了抵押，则银行应当先向甲公司主张抵押权，不足部分由乙公司承担保证责任 C. 如果该抵押是甲公司以其自己的一辆汽车为该贷款提供了抵押，但该抵押合同因为各种原因被确认无效或者被撤销，或者担保物因不可抗力的原因丧失而没有代位物的，乙公司的保证责任应当免除 D. 如果甲公司邀请丙公司以其公司的财产为该贷款提供了抵押，银行在主合同履行期届满后怠于对丙公司行使担保物权，致使担保物的价值减少或者毁损、灭失的，视为银行放弃部分或者全部物的担保。乙公司在债权人放弃权利的范围内减轻或者免除保证责任 [简答题]水上人歌月下归的上句是什么，作者是谁？
[多项选择]下列（）情况中，邮局不受理撤回特快专递邮件。
A. 国内特快专递邮件已妥投收件人 B. 凭副收据提出撤回的 C. 特快专递邮件因内装禁寄物品而被有关部门销毁或没收的 D. 国际特快专递邮件已发往国内互换局 [单选题]魏氏组织使钢材性能变化为( )。
A.塑性增大 B.韧性下降 C.脆性减小 [单项选择]一列火车从北京开往上海，时速80公里川、时，两地相距1440公里。如果火车早上 6点从北京出发，问几点到上海( )
A. 20 B. 22 C. 24 D. 次日2 [多项选择]目前我国土地登记工作正依法有序地向______的方向发展。
A. 市场化 B. 法制化 C. 资源化 D. 信息化 E. 规范化 [单选题]《国家电网有限公司输变电工程施工分包安全管理办法》规定，（）负责审查专业分包商的施工组织措施、技术措施、质量保证措施。
A.业主项目部 B.监理项目部 C.施工项目部 D.施工单位 我来回答: 提交
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