次氯酸钠溶液作为根管冲洗液,最常使用的浓度是A.0.5% B.25% C.30% D

题型:单项选择题

问题:

次氯酸钠溶液作为根管冲洗液,最常使用的浓度是

A.0.5%

B.25%

C.30%

D.5.25%

E.10%~30%

考点:广西临床住院医师规范化培训内科学内科学题库
题型:单项选择题

将5位志愿者分成3组,其中两组各2人,另一组1人,分赴世博会的三个不同场馆服务,不同的分配方案有         种(用数字作答);

题型:单项选择题

读“我国人均耕地变化图”(图1-20),完成下列题目:

人均耕地(公顷)

       

图1—20

(1)从人均耕地变化曲线看,我国的人均耕地面积在日趋___________,这一趋势若不能得到有效的缓和,按1955~1975年的速度发展,大约在2020年,我国人均耕地将趋近于___________。(2分)

(2)造成这一现状的主要原因是__________________________________________。(2分)

(3)我国可以开垦的荒地已经不多了,主要分布在________和___________等省,我国土地利用类型中面积最大的是___________。(3分)

(4)当前,我国耕地不但在数量上减少,其质量也不断下降的原因是___________。(2分)

题型:单项选择题

第三部分:阅读理解(共15小题,每题2分,满分30分)

阅读下列短文,从每题所给的四个选项(A、B、C和D)中,选出最佳选项,并在答题卡上将该项涂黑。

[AP Eeb.8] Costa Ricans have elected their first woman president as the ruling party candidate Laura Chinchilla won in an election after campaigning to continue free market policies in Central America’s most stable nation Sunday night.

[Reuters Feb. 19]The leader of Niger’s military junta(军政府)made his first public appearance on Friday, a day after toppling(推翻)President Mamadou Tandja, but made no mention of any timetable to elections.

[Reuters Feb. 20] The Dutch coalition(联合)government collapsed on Saturday after the two largest parties disagreed over whether to withdraw the 2,000 Dutch troops from Afghanistan as planned this year.

[The Guardian Feb. 25]Viktor Yanukovych took the oath of office in the Verkhovan Rada, the Ukrainian parliament, iv Kiev today, with the ceremony coming after weeks of protest(抗议)over claimed cheating following his victory in February’s president election.

[The Guardian Feb.27] One of the world’s most powerful earthquakes in a century struck Chile on Saturday, killing at least 214 people, knocking down buildings and causing a tsunami that threatened Pacific coastlines as far away as Hawaii and Japan.

[AP Mar. 8]Kathryn Bigelow made Oscar history Sunday night, becoming the first woman to win best director at the Academy Awards for her Iraq War movie “The Hurt Locker”, which earned six Oscars, including one for best picture.

56.Laura Chinchilla’s success in her president election probably has something to do with      .

A.her being a woman 

B.her campaign in Central America

C.her being a ruling candidate   

D.her efforts to continue free market policies in her nation

57.Which of the following statements is TRUE according to the news above?

A.The Academy Awards saw no women winners before Kathryn Bigelow.

B.Viktor Yanukovych won his president election by means of cheating.

C.The Dutch haven’t decided whether to withdraw its troops from Afghanistan.

D.The earthquake that happened in Chile caused a serious tsunami in Hawaii and Japan.

58.All the following events happened on the American Continent except        .

A.Laura Chinchilla became the first woman president in Costa Rica

B.Kathryn Bigelow became thee first woman to win best director in Oscar history.

C.the leader of Niger’s military junta toppled President Mamadou Tandja

D.a very powerful earthquake hit Chile on Saturday

题型:单项选择题

全面、完整的健康教育项目应开始于()。

A.科学的计划

B.科学的规划

C.科学的设计

D.科学的分析

E.科学的诊断

题型:单项选择题

一个基因如何产生两种不同类型的mRNA分子

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