有关液体栓塞剂的栓塞机制以下哪项是正确的()。 A.液体栓塞剂多通过化学破坏作用损伤

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问题:

有关液体栓塞剂的栓塞机制以下哪项是正确的()。

A.液体栓塞剂多通过化学破坏作用损伤血管内皮

B.液体栓塞剂产生的栓塞多为短效栓塞

C.液体栓塞剂栓塞后血管容易复通

D.释放液体栓塞剂时比较容易监控

E.液体栓塞剂的化学性质一本都比较稳定,容易保存,如无水酒精等

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Learning a foreign language is difficult for many learners. The following tips may help you learn a foreign language quickly.

Reading aloud

When you start learning a foreign language, you should read aloud. Reading aloud instead of reading lowly only to yourself helps you in remembering. It helps with pronunciation, too.

Building your vocabulary

You’ll have to make a few word lists, you have to memorize and review them regularly. You may review the word lists at least once a day for two weeks.

Learning grammar

Learning the grammar of a foreign language is a dry and boring task. But it can speed your language learning. Don’t jump to learn tenses(时态), it’s better to be done after you’ve learned some of the language. The most important thing is that you shouldn’t worry about the mistakes you’ll make when you start. If you do like this, you’ll learn the language better.

Watching TV and movies

This is a wonderful way to learn a foreign language quickly. You can watch TV shows in the language you are learning. They’ll help you a great deal with the vocabulary as well as catching what others say and also your pronunciation.

根据短文内容,选择正确答案,(5分)

小题1: Reading aloud while learning a foreign language helps in ____________.

A.talking to people

B.understanding words

C.learning grammar quickly

D.pronouncing words correctly小题2:Which of the following is important in building one’s vocabulary of a foreign language?

A.Writing the words again and again.

B.Listening to tapes in the language.

C.Reviewing words from time to time

D.Reading more articles in the language.小题3: When learning the grammar of a foreign language, you should _____________.

A.learn tenses first

B.try not to make mistakes

C.make at least one word list

D.learn from the mistakes you make小题4:The underlined phrase “ a great deal” means “___________”.

A.much

B.little

C.a few

D.never小题5:Which is the best title for the passage?

A.Traditional ways of learning English

B.Some advice on learning a foreign language

C.The important of learning a foreign language

D.How to deal with difficulties in learning a language

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填表.
半径直径周长
12厘米
6分米
12.56米
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同1949年相比,1952年全国工农业总产值增长77.5%,全国职工平均工资增长约70%,农民收入增长30%以上。据此判断,下列说法错误的是

A.社会趋于稳定是经济恢复的重要条件

B.为大规模经济建设创造了条件

C.反映了社会主义制度的优越性

D.资本主义工商业发挥了积极作用

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测试脉冲发生器发电机功率加载箱及CVA线圈测力仪,额定电压是多少?

题型:单项选择题

活塞裙部形状为()。

A、圆形

B、方形

C、椭圆形

D、长方形

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