[单项选择]
In recent years a new farming revolution has begun, one that involves the (21) of life at a fundamental level—the gene. The study of genetics has (22) a new industry called biotechnology. As the name suggest, it (23) biology and modem technology through such techniques as genetic engineering. Some of the new biotech companies specialize in agriculture and are working feverishly to (24) seeds that give a high yield, that (25) diseases, drought and frost, and that reduce the need for (26) chemicals. If such goals could be achieved, it would be most (27) . But some have raised concerns about genetically engineered crops.
In nature, genetic diversity is created within certain (28) . A rose can be crossed with a different kind of rose, but a rose will never cross with a potato. Genetic engineering, (29) usually involves taking genes from one species and inserting them into another (30) to transfer a de
A. after all
B. on the other hand
C. in any case
D. as s rest
[填空题]
{{B}}
A
Cooler Planet{{/B}}
Scientists are cooking up solutions based on
current technology that they say they could dramatically turn down the heat of
global warming over the next 50 years.
Innovations such as
cheaper wind power, gas-electric hybrid and gas cards that generate funds for
climate-change projects already are available. Introducing them across the
nation could put a dent in the growth of greenhouse gases that are warming the
planet, scientists say.
The concentration of carbon dioxide--a
potent greenhouse gas--is likely to double before the end of the century, the
United States says. Scientists say further warming is inevitable as greenhouse
gas emissions climb but that the worse effects can still be avoided.
"The question now is not ’whether to adapt ’ but ’how to adapt ’" says a
2004 U.N. report on climate change.
The solutions, says experts,
must come from action
[填空题]在Excel2003中，SUM函数最多允许有（）个参数。
[单选题]《普速工务安规》规定：营业线施工II级施工指的是繁忙干线封锁正线()h及以上或影响全站（全场）信联闭4h及以上的施工。（单选题）
A.6
B.3
C.7
D.9
[单项选择]( )不能提高砌体受压构件的承载力。
A. 提高构件的高厚比
B. 减小构件的轴向偏心距
C. 增大构件截面尺寸
D. 提高块体和砂浆的强度等级
[单项选择]患者，男，57岁。急性肾衰竭无尿期，出现呼吸困难、头痛、轻度腹胀，心电图示T波高尖、QT间期延长。应考虑（）
A. 低钾血症
B. 高钾血症
C. 水中毒
D. 尿毒症
E. 酸中毒
[单选题]风机的选择：（1）根据输送气体的不同理化性质选取不同用途的通风机；（2）根据所需的风量和风压，确定风机的型号；（3）所选风机实际工况要尽可能接近最高效率点；以及( )。
A.选择低能耗的风机
B.适合运行场地的风机
C.维护保养简单的风机
D.选择低噪音风机
[单选题]一个心动周期中,相当于房室瓣开始关闭至开始开放的时程是:
A. 心室收缩期和等容舒张期之和
B. 心室舒张期和等容收缩期之和
C. 心室舒张期
D. 房缩期和心室收缩之和
E. 心室收缩期
[单选题](判断题)《义勇军进行曲》的曲作者是田汉。
A.正确
B.错误
[判断题]金融机构同业拆借、在银行间债券市场进行的债券交易,远远超过大额交易的规定标准的,应作为大额交易上报。( )
A.正确
B.错误
[多项选择]多见于幼儿的肿瘤是（）。
A. 肌母细胞瘤
B. 神经母细胞瘤
C. 畸胎瘤
D. 髓母细胞瘤
E. 肾母细胞瘤
[单选题]以下各项中,验证临床资料可靠性的方法是( )
A.相关分析
B.补充提问
C.分析迹象
D.内容反应
[多选题]下列哪组是清心火的药物（ ）
A.黄连、木通、郁金
B.牛黄、冰片、朱砂
C.连翘心、莲子心、竹叶卷心
D.丹参、麦冬、犀角
[单选题]评标中，如发现某个评标专家存在法定回避情形的，则招标人应()。
A.重新组织招标
B.重新组建评标委员进行评标
C.重新确定满足要求的专家替代，该评标专家已经完成的评标结果无效
D.重新确定满足要求的专家替代，但该评标专家之前完成的评标结果有效
[多选题]提高就业质量和人民收入水平,鼓励勤劳守法致富,就要( )。
A.扩大中等收入群体
B.增加低收入者收入
C.调节过高收入
D.取缔非法收入
[填空题]逆转录酶所具有的三种类型的酶活性分别为______、______、______。
[单选题]宋代饮茶多采用( ),制作工艺比唐代更加精细,多姿。
A.碗
B.盏
C.壶
D.杯
[多选题]在HP Chem工作站上可以采用（）方法来消除基线不稳造成的小峰的误识别。
A.A.设定最小检出峰高
B.B.设定最小检出面积
C.C.设定更高的峰检出域值
D.D.设定更大的基线漂移
[单选题]101-128车( )保护制冷系统在运行时，不会因压力过高或者过低而引起系统损坏。
A.高低压开关
B.气液分离器
C.电子膨胀阀
D.电磁阀
[填空题]Few people ______ (不抱怨工作单调乏味), but they will feel more bored if they do not work.
[单选题]
线路允许速度 Vmax>120km/h,钢轨擦伤或剥落掉块.钢轨低头接近或达到( )时,应及时处理。
A.轻伤
B.重伤
C.折断
D.大裂纹
[多项选择]统计行政法规的法律效力，高于（）。
A. 统计法律
B. 地方性统计法规
C. 政府规章
D. 部门规章
E. 宪法
[简答题] As a bicycle kingdom gearing-up to become an automobile society, China, the world’’s third largest car manufacturing base, is facing a serious problem of automobile-related pollution and (47)______ levels of petrol (48)______.
China already ranks third among the world’’s automobile manufacturing countries, with a voracious domestic demand that has sucked all major automobile manufacturers into the market. (49)______ from the State Environmental Protection Administration show that China will have 33 million automobiles by 2005 and over 131 million by 2020.
As the market (50)______, so are serious pollution problems. Vehicles have become the biggest carbon monoxide (一氧化碳) and nitrogen oxide (氧化氮) emitters in big cities like Shanghai, Beijing and Guangzhou. In China’’s 14 largest cities, air pollution kills 50,000 newborn babies and causes 400,000 cases of respiratory (呼吸的) illness every year, according to the Ministry of Science and Technology.
Not only do vehicles cre
[单选题]最不适用于细窄根管冲洗的液体是( )
A.生理盐水
B. 2% 氯胺 T 钠
C.3%过氧化氢
D.EDTA溶液
E.0.2%氯己定
