题目内容

Directions: There are five reading Passages in this part. Each passage is followed by five questions. For each question there are four suggested answers marked A, B, C and D. Choose one best answer and blacken the corresponding letter on ANSWER SHEET I.Passage OneSince the early 1980s, scientists have revealed some 40 human genes involved in cancer. These genes are essential for normal growth, but can be subverted to cause a tumor.Dr. Jorge Yunis of the University of Minnesota Medical School in Minneapolis has found that 70 percent of oncogenes, or cancer-causing genes, are located near inherited weak points on chromosomes(染色体). Varying from individual to individual, vulnerable to chemical carcinogens(致癌剂) ,X rays and other cancer-inducing agents."If a chromosome snaps apart in the immediate vicinity of an oncogene," says Yunis, "normal genetic control mechanisms could break down and the stage would be set for the formation of cancer." Younis hag shown that such a sequence occurs at the beginning of numerous leukemias (白血病), lymphomas (淋巴瘤) and some tumors of the lung, colon (结肠) and breast.Yunis and Other investigators have found that petroleum-based products--notably pesticides and insecticides--damage specific sites on at least two of the 23 pairs of human chromosomes that carry genetic information. Similarly, tobacco smoke tends to attack a part of another chromosome. Under what conditions will the formation of cancer begin（）

A. When a chromosome breaks apart neat an oncogene and its control functions fail.
B. When people drink too much and are easy to get tired.
C. When people smoke too much and are difficult to get to sleep.
D. When people eat too much petroleum-based products.

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患者，女性，30岁，反复发作性喘息3年，近1年来发作频繁，重时端坐呼吸。查体：心率110次/分，呼吸30次/分，双肺可闻广泛性呼气相哮鸣音。血细胞分类示白细胞10.5×109/L，嗜酸性粒细胞占8%。X线胸片示双肺纹理增粗。该患者最易发生的酸碱平衡紊乱为( )

A. 呼吸性酸中毒
B. 代谢性酸中毒
C. 呼吸性碱中毒
D. 代谢性碱中毒
E. 呼酸合并代酸

Passage Two Your mind like your body is a thing where the powers are developed by effort. This is a principal use, as I see it, of hard work in studies. Unless you train your body you can’t be a good sportsman, and unless you train your mind you can’t be much of a scholar. The four mi- les a boatman covers at top speed is in itself nothing to the good, but the physical capacity to hold out over the distance is thought to be of some value. So a good part of what you learn by hard study may not be retained forever, and may not seem to be of much final value, but your mind is a better and more powerful instrument because you have learned it. "Knowledge is power," but still more the ability of acquiring and using knowledge is power. If you have a trained and powerful mind, you are bound to have stored it with something, its value is more in what it can do, what it can grasp and use, than in what it contains; and if it were possible, as it is not, to come out of college with a trained mind and nothing useful in it, you would still be ahead, and still, in a manner, educated. The title that best expresses the main idea of this passage is ______.

A. Knowledge Is Power
B. How to Retain and Use Knowledge
C. Physical and Mental Efforts
D. The Trained Mind Is What One Needs

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张某于1991年12月20日向国家专利局提出“森林剩余废物燃烧设备”发明专利申请，1992年12月20日，国家专利局向其授予发明专利权。甲家具厂，为解决生产边角料问题，于1991年7月对原有锅炉进行技术改造，配备一台物料机，将锯末、木粉和刨花等杂物直接吹进锅炉悬浮燃烧，试制成“高效节能炉”，并于1992年1月取得省科委颁发的科学技术成果证书。此后，该厂一直在本厂范围内使用“高效节能炉”。1993年12月8日，张某向法院提起诉讼，认为该家具厂侵犯其专利权，要求赔偿经济损失。经查明，“高效节能炉”与“森林剩余废物燃烧设备”在技术特征上完全相同。要求：根据上述资料，回答下列问题。 (1)请具体指明张某“森林剩余废物燃烧设备”的专利保护期间起算点。说明理由。 (2)甲家具厂的行为是否侵犯了张某的专利权说明理由。