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【简答题】
读下列材料,完成下列问题。(14分) 材料:某地不同时间段城区范围变化及对应的人口密度变化示意图(见下图) (1)据材料分析,甲乙两城市形成的主要区位因素是什么?请说明理由。(6分) (2)在该地城市发展的三个阶段中,城市内部地域功能分区最明显的是哪个阶段?该地从阶段Ⅰ到阶段Ⅲ,城市发展的显著特点有哪些?(6分) (3)城市化是经济发展的客观需要,我国在城市发展过程中应采取的措施有(     )(2分) A.各地都要发展大城市、城市群或城市带,带动区域经济发展 B.重视城市基础设施建设,城市化发展与基础设施建设同步发展 C.减少小汽车的使用,大力发展公共交通 D.城市空间布局以环状结构为主,以节省土地资源
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【单选题】在Solidworks软件零件特征操作中,旋转特征草图里绘制的构造线是否参与建模?
A.
对称结构参与建模
B.
构造线一定参与建模
C.
构造线不参与建模
D.
构造线没有任何作用
【单选题】旋转特征草图里绘制的构造线是否参与建模
A.
构造线没有任何作用
B.
对称结构参与建模
C.
构造线不参与建模
D.
构造线一定参与建模
【单选题】Genetically altered food is unreasonable for several reasons.
A.
Good
B.
Bad
【单选题】For the study, two types of rice were genetically altered to resist two common insect ___________, which usually require heavy use of pesticides to control.
A.
pests
B.
traits
C.
conventional
D.
skeptics
【单选题】输入植物种子、种苗及其他繁殖材料的,应当在入境前7天报检。( )
A.
正确
B.
错误
【单选题】In countries with long agrarian traditions, the idea of genetically altered, high-tech crop production ______.
A.
seems against nature
B.
raises all kinds of questions
C.
has environmental and safety questions
D.
brings about ethical questions
【判断题】A genetically modified organism (GMO) is any organism whose genetic material has been altered using genetic engineering techniques (i.e., a genetically engineered organism).
A.
正确
B.
错误
【判断题】An American scientist claimed he helped make the world ’ s first genetically modified human beings: twin girls whose DNA he said he altered.
A.
正确
B.
错误
【单选题】The use of genetically altered bacteria in bioremediation to clean up oil spills is enhanced by providing which of the following
A.
oil
B.
oxygen
C.
nitrogen
D.
water
【简答题】A genetically modified organism (GMO) is any organism whose genetic material has been altered using _______________________________.
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