基因芯片技术是近几年才发展起来的崭新技术,涉及生命科学、信息学、微电子学、材料学

题型:选择题

问题:

基因芯片技术是近几年才发展起来的崭新技术,涉及生命科学、信息学、微电子学、材料学等众多的学科,固定在芯片上的各个探针是已知的单链DNA分子,而待测DNA分子用同位素或能发光的物质标记。如果这些待测的DNA分子中正好有能与芯片上的DNA配对的,它们就会结合起来,并在结合的位置发出荧光或者射线,出现“反应信号”,下列说法中不正确的是[ ]

A.基因芯片的工作原理是碱基互补配对

B.待测的DNA分子首先要解旋变为单链,才可用基因芯片测序

C.待测的DNA分子可以直接用基因芯片测序

D.由于基因芯片技术可以检测未知DNA的碱基序列,因而具有广泛的应用前景

考点:基因诊断与基因治疗
题型:选择题

读“南极洲地图”,完成下列填空:

(1)在图上画出地球自转方向。

(2)填写大洋与大洲的名称。

①______洋,②______洋,③______洋;C______洲,D______洲。

(3)填写中国的科学考察站名称。

A_____站,B_____站

(4)南极主要的气候特征是:______________________________;南极气候比北极地区气候更加寒冷的最主要原因是______。(填字母)

A、纬度更高B、海拔更高C、反射率更高D、气压更高

题型:选择题

()是明清两代不断营造的结果,是现存是大的古建筑群。

题型:选择题

In the second half of each year, many powerful storms are born in the tropical Atlantic and Caribbean seas. Of (91) , only about half a dozen (92) the p, circling winds of 75 miles per hour or more that give them hurricane status, and several usually (93) their way to the coast. There cause millions of dollars of (94) , and bring death to (95) numbers of people.
The great storms that hit the coast start (96) innocent circling disturbances hundreds, even thousands of miles out to sea. As they travel aimlessly over water (97) by the summer sun, they are carried westward by the (98) winds. When conditions are just (99) , warm, moist air flows in (100) the bottom of such a disturbance, moves upward through it and comes out at the top. In the (101) , the moisture in this warm air produces rain, and with it the heat is converted to energy in the form of p winds. As the heat increases, the (102) hurricane begins to swirl in a counter-clockwise motion.
The average life of a hurricane is only about nine days, but it contains almost (103) power than we can imagine. The energy in the heat released by a hurricane’s rainfall in a(n) (104) day would (105) the entire electrical needs of the United States for more than six months. Water, not wind, is the main (106) of death and destruction in a hurricane. A(n) (107) hurricane brings 6-to 12-inch downpours (108) in sudden floods. (109) is the powerful movement of the sea-the mountains of water moving toward the low-pressure hurricane center. The water level (110) as much as 15 feet above normal as it moves toward shore.

A.more

B.much

C.large

D.many

题型:选择题

骨髓检查对下列哪种疾病确诊无意义

A.不稳定血红蛋白病
B.慢性粒细胞白血病
C.多发性骨髓瘤
D.恶性组织细胞瘤
E.巨幼红细胞性贫血

题型:选择题

请在“考试项目”菜单上选择“字处理软件使用”菜单项,完成以下内容。
1.在考生文件夹中,存有文档WT9.DOC,其内容如下。
[文档开始]
新能源技术有太阳能技术、生物能技术、潮汐能技术、地热能技术、风能技术、氢能技术和受控热核聚变技术等多种。
新能源技术有太阳能技术、生物能技术、潮汐能技术、地热能技术、风能技术、氢能技术和受控热核聚变技术等多种。
[文档结束]
按要求完成下列操作:新建文档WD9.DOC,插入文件WT9.DOC的内容。第一段设置为小四号仿宋GB2312字体,左对齐;第二段设置为四号黑体、加粗、右对齐,存储为文件WD9.DOC。
2.新建文档WD9

  • A.DOC,插入文件WD9.DOC的内容,将第一段文字在第一段之后复制3次。将前两段合并为一段,再将合并的一段分为等宽三栏,栏宽为4.5厘米。存储为文件WDgA.DOC。
    3.制作3行4列表格,列宽3厘米,行高26磅。再做如下修改,均分第一列、第二、三行单元格,并存储为文仁 WD9
  • B.DOC。
    4.新建文档WD9
  • C.DOC,插入文件WD9B.DOC的内容,表格边框为1.5磅,表内线0.5磅,第一行设置红色底纹,存储为文件WD9C.DOC。

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