题目内容
承揽人应以自己的设备、技术和劳力,完成主要工作,但当事人另有约定的除外。未经定作人同意将主要工作交由第三人的,定作人可以解除合同。()
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Section B
Directions: In this section, you will hear 3 short passages. At the end of each passage, you will hear some questions. Both the passage and the questions will be spoken only once. After you hear a question, you must choose the best answer from the four choices marked A, B, C and D.
听力原文： Living things take from their environment and give back to their environment. In other words, living things and their environment are interdependent. Living things take matter and energy from the environment. For instance, animals feed on plants, or on other animals. And they return materials to the environment. This interaction goes on continually. Man also is in active give-and-take relations with his environment. However, there is one way in which man is different. Other living things do not change their environment the way man does. Man is not only adapted to the environment. He alters his environment in other complex ways.
How is it that man can alter his environment, and no other living things can？ It is because of his brain. With his brain, man learns.
Man's brain makes it possible for him to record what he learns. He puts his records in words, in pictures, in sounds. In this way man can pass on what he learns to other men.
(16)
乙烯雌酚引起女婴儿阴道畸形是
企业计提了存货跌价准备,如果其中有部分存货已经销售,则企业在结转销售成本时不应同时结转对其已计提的存货跌价准备,应于期末计提存货跌价准备时一并调整。()
2007年5月1日,甲以其购买的一套期房为抵押,与乙签订为期1年的借款合同,并办理了抵押登记手续。2008年5月15日,乙将甲抵押的不动产作为标的与丙签订买卖合同,甲得知后对此表示反对。按照法律规定,乙、丙双方所签订的合同在效力上属于()。
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