问题 问答题

据天气预报报道,中考前后几天的天气相差不大,南南同学记录了6月16日一天中不同时间的温度如下表:

(1)请你根据表中的数据在图中绘出温度随时间变化的图象(提示:可以用柱形图、线形图或曲线图表示)

(2)请根据你绘出的图象预测6月1 7日下午13:30的大致温度                    

(3)温度与人们的生活息息相关,以下给出了一组常见的温度值,你认为合理的是[ ]

A.人体正常体温是39℃  

B.标准大气压下,冰水混合物的温度为0℃  

C.沸水的温度一定是100℃  

D.适合人们洗澡的热水温度约70℃

答案

(1)图“略”  

(2)25~28℃之间均可  

(3)B

填空题

金属材料是现代生活和工业生产中应用极为普遍的一类物质。

(1)钛合金是21世纪的重要材料,具有熔点高、可塑性好、抗腐蚀性强、与人体有很好的“相容性”等优良性能。金属的下列用途:①用来做保险丝 ②用来制人造骨 ③用于制造船舶 ④用于制造航天飞机。其中与钛合金性能符合的是__________(填序号)。

(2)铁是一种最主要的金属材料,实验室里用一氧化碳还原氧化铁得到铁,实验过程中,先通入一氧化碳目的是__________________。

炼铁厂常以焦炭、赤铁矿、空气等为主要原料炼铁,反应过程如下:

写出② ③两步的化学方程式_______________、__________________。

(3)矿物的储量有限,而且不可再生,我们必须保护金属资源并进行金属的回收利用。某兴趣小组同学欲从含有硫酸、硫酸亚铁和硫酸铜的废液中,回收全部金属铜,应先加入________________,反应的化学方程式为:______________________、_____________________。充分反应后过滤,滤渣中含有___________。继续处理可以得到纯净的金属铜和硫酸亚铁固体。

(4)在学习了金属资源保护内容以后,兴趣小组同学对金属的锈蚀做了观察,发现残留水的铁锅在与水面接触的部位最易生锈;家用的铜质水龙头也生了一层绿色的铜锈。回忆已有的知识,铁生锈的原因是____________________。那么铜生锈的原因是什么?查阅有关资料:铜锈的主要成份是Cu2(OH)2CO3。他们除依照铁钉锈蚀条件的探究方法进行实验外,还补充做了铜锈蚀与_________有关系的实验。请写出一种防止铁或铜等金属制品生锈的具体方法_______________________。

单项选择题


In this section you will find after each of the passages a number of questions or unfinished statements about the passage, each with 4 ( A, B, C and D) choices to complete the statement. You must choose the one which you think fits best. The time for this section is 75 minutes.

Questions 1-5 are based on the following passage.
Sen. John F. Kerry’s 11-day mini-campaign on the theme of national security appears unlikely to produce sensational headlines or seize the country’s attention—which is, on balance, to his credit. At a moment when the crisis in Iraq dominates the national discussion, Mr. Kerry is resisting the temptation to distinguish himself from President Bush with bold but irresponsible proposals to abandon the mission, even though that course is favored by many in his party. Nor has he adopted the near-hysterical rhetoric of former vice president A1 Gore, who has taken to describing Iraq as the greatest strategic catastrophe in American history and calling US handling of foreign detainees an "American gulag. "
Instead, Mr. Kerry is in the process of setting out what looks like a sober and substantial altemative to Mr. Bush’s foreign policy, one that correctly identifies the incumbent’s greatest failings while accepting the basic imperatives of the war that was forced on the country on Sept. 11, 2001. In his opening speech on the subject Thursday, Mr. Kerry reiterated one of the central tenets of Mr. Bush’s policy: Lawless states and terrorists armed with weapons of mass destruction present "the single greatest threat to our security. " He said that if an attack on the United States with unconventional weapons "appears imminent I will do whatever is necessary to stop it" and "never cede our security to anyone"—formulations that take him close to Mr. Bush’s preemption doctrine.
Yet Mr. Kerry focused much attention on the president’s foremost weakness, his mismanagement of US alliances. The Bush administration, he charged, "bullied when they should have persuadeD. They have gone it alone when they should have assembled a team. " Not only is the truth of that critique glaringly evident in Iraq and elsewhere, but Mr. Kerry is also right to suggest that repairing and reversing the damage probed will require a new president. Though Mr. Bush has belatedly changed course in response to his serial failures in Iraq, there is no evidence that he would pursue a more multilateral foreign policy if reelected.
Mr. Kerry’s promise to "launch and lead a new era of alliances for the post 9/11 world" nevertheless does not add up to a strategy by itself. Tensions between the United States and countries such as France, Germany and South Korea predate George W. Bush and will not disappear if he leaves office; leaders in those nations have their own ambitions to challenge or contain American power. Strong alliances require a common strategic vision—and the vision offered so far by Mr. Kerry is relatively narrow. His Thursday speech focused on combating threats and on reducing dependence on Middle East oil; this week he will set out policies to block the spread of nuclear weapons. But he has had little to say about the good that the United States should seek to accomplish in the worlD. In an interview Friday, the candidate stressed that he has set out the "architecture" of his foreign policy and will talk more about goals and values in coming weeks. Thus far he has spoken more about protecting American companies and workers from foreign competition—something that hardly promotes alliances—than about fostering democracy in the Middle East or helping poor nations develop.
The emerging Kerry platform suggests that ultimately he would adopt many of the same goals as Mr. Bush. In his latest speech he rightly warned of the terrible consequences of failure in Iraq and, like Mr. Bush, embraced elections and the training of Iraqi security forces as the best way forwarD. His proposal for a U. N. high commissioner represents a slight upgrade on the deference already given by the White House to U. N. representative Lakhdar Brahimi; his call for a NATO- led military mission already has been aggressively pursued by the Bush administration, with poor results. There are, in fact, few responsible alternatives to the administration’s course. Mr. Kerry’s argument is that he has a better chance of making it work. It’s not a bold offer to voters—but it’s probably the fight one.

In the author’s view, the "good that the US should seek to accomplish in the world" might be______.

A.creating a p alliance with France, Germany and South Korea

B.combating threats and reducing dependence on Middle East oil

C.fostering democracy in the Middle East or helping poor nations develop

D.protecting American companies and workers from foreign competition