和现实社会生活相比,网络世界具有的显著特征是()①网络具有参与的随意性②网络信息的虚

题型:单项选择题

问题:

和现实社会生活相比,网络世界具有的显著特征是()

①网络具有参与的随意性

②网络信息的虚假性

③网络交往具有一定的虚幻性

④网络角色具有可变换性

A、①②③

B、②③④

C、①③④

D、①②③④

考点:高中政治思想品德面对科技进步的伦理冲突面对科技进步的伦理冲突题库
题型:单项选择题

American schools begin in September after a long summer holiday. There're two terms in a school year. The first term is from September to January, and the second term is from February to June. Most American children begin to go to school when they're five years old. Most students are seventeen or eighteen years old when they finish high school.

High school students take only five or six subjects each term. They usually go to the same classes every day, and they have homework for every class. After class, they do a lot of interesting things.

After high school, many students go to college(大学). They usually have to pay a lot of money. So, many college students work after class to get money for their studies.

小题1:In America, schools begin in_________ after summer holiday.

A.July

B.September

C.May

D.February小题2:Most American children go to school at the age of _________.

A.five

B.seven

C.eighteen

D.seventeen小题3:After high school, many students go to _________.

A.cities

B.work

C.college

D.town

题型:单项选择题

关于爱立信MGW单板面板的灯的状态,下列描述正确的是()

A.红灯灭代表单板工作正常

B.绿灯快闪代表BUSY

C.黄灯快闪代表读写数据

D.黄灯长亮代表闭锁

题型:单项选择题

经济困难学生享有申请当年()、()、()等资助权利。

题型:单项选择题

被评价者先看一些有关某个组织管理中的问题材料,然后要求向高层领导提出一个分析报告。此种方法属于评价中心哪种测试方法()。

A.面谈模拟

B.角色扮演

C.书面案例分析

D.事实判断

题型:单项选择题

传统农作物育种途径往往是通过杂交获得,随着生物工程技术的不断发展,新品种的培育途径逐渐被扩宽。目前至少有7种培育农作物新品种的途径被广泛应用。下图为水稻的几种不同的育种方法示意图。请据图回答:

 

科学家从悬浮培养的单细胞或胚囊中,通过植物组织培养技术获得胚状体,并将其包埋在一个能提供营养的胶质中,外包裹上人造种皮,制成人工种子。目前,我国科学家利用植物组织培养技术已在烟草、水稻、小麦和玉米等植物上成功诱导出胚状体,而美、日等国正着手将人工种子商品化。离体细胞进行植物组织培养获得胚状体需要通过()、()过程。

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