动物细胞有丝分裂过程与植物细胞有丝分裂过程明显不同的是()①间期有染色体的复制②中心

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问题:

动物细胞有丝分裂过程与植物细胞有丝分裂过程明显不同的是()

①间期有染色体的复制

②中心体周围发出星状射线,形成纺锤体

③后期有着丝点的分裂

④末期在细胞中央不形成细胞板

⑤后期到末期染色体平均分配到两个子细胞中

A.①②④

B.③⑤

C.②⑤

D.②④

考点:高中生物细胞增殖细胞增殖题库
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网络地址和端口翻译(NAPT)用于 (43) ,这样做的好处是 (44)

A.可以快速访问外部主机

B.限制了内部对外部主机的访问

C.增强了访问外部资源的能力

D.隐藏了内部网络的IP配置

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There are a number of different ways to study a language, each of which has advantages and disadvantages. You may find a combination of these is a best choice for you.

If you can find a course in the language you want to learn in your country, this is quite a good way to study. A variety of courses are usually available, including part-time and full-time courses. If you look around, you can probably find a course that suits your needs.

The main advantage of such courses is that you’ll have a teacher to provide you with instructions, support and with whom to practice your language. You will also be studying with others who are at more or less the same level and you can exchange ideas with them and help one another.

One choice is to study a language in a country where it’s spoken. There are many schools teaching English, French, Spanish, Italian and German, but far fewer teaching other languages. The main advantage of studying abroad is that you are totally in the language, not just in class, but the rest of the time as well. As a result, you can make rapid progress.

The main disadvantage of studying abroad is the cost, not just of your course, but also of your food and travel. However, if you’re a native speaker of English, you could get a job teaching English in a country where the language you want to learn is spoken.

Studying online is also a good choice. There are plenty to choose from a lot of languages. Many are free but there are some you have to pay for. Some of the paid ones provide support from teachers via email, chat programs, video conferencing, telephone or even face to face.

小题1:Studying in your country has many advantages except that _____.

A.there are many courses to choose from

B.you can study with others of the same level

C.all the courses are free of charge

D.the teacher can offer you instructions and practice小题2:Compared with two other ways, the obvious disadvantage of studying abroad lies in its _____.

A.various courses

B.high cost

C.studying time

D.job chances小题3:The online courses ________.

A.are all free of charge

B.can’t be found everywhere

C.can be easily taken on the Internet

D.are all supported by teachers小题4:What can we learn from this passage? ________

A.Studying abroad is the only good way to study English.

B.All the online courses are very easy to study.

C.If you study a language in your own country, you can study with more partners of the same level.

D.You can get any job you like after studying abroad.

题型:单项选择题

BOT项目管理模式的含义是( )。

A.设计—建造—运营

B.建造—运营—移交

C.建造—拥有—移交

D.投资—建造—移交

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任何单位和个人不得歧视艾滋病病毒感染者、艾滋病病人及其家属。

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环形调制器的四个二级管按格型连接而成,因为四个二极管()形成闭合回路,故称为环形调制器。

A.并联相接

B.串联相接

C.首尾相接

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