吸烟者肺癌死亡率=0.96‰，不吸烟者=0.07‰，一般人群=0.56‰，人群中吸烟

信息必须通过传播才有实际意义，请举出两个现代信息传播的工具______，______．

Ⅰ．某研究性学习小组用10g胆矾制取CuO，并证明CuO可以催化H₂O₂的分解反应．

（1）首先制备CuO，实验步骤如下，请完成缺少的步骤：

①称取10g胆矾，放入小烧杯中，再加水溶解；②向小烧杯中滴加NaOH溶液，至产生大量沉淀；③用酒精灯在石棉网上加热小烧杯，至沉淀物完全黑色；④将以上混合物过滤，洗涤，______，然后研细；⑤检查④中洗涤是否完全的操作是______．

（2）用图1所示，按表中设计实验方法，证明CuO能催化7%H₂O₂溶液的分解，并与MnO₂的催化效果进行比较．

实验序号	双氧水体积	催化剂	待测数据
a	15mL	无
b	15mL	0.5g CuO
c	15mL	0.5g MnO2

①从设计原理看，实验中的待测数据是______．

②为探究CuO在实验b中是否起催化作用，除与

a比较外，还应补充以下实验（不必写具体操作）：

A．证明CuO化学性质在反应前后是否改变；

B．______．

Ⅱ．摩尔盐[（NH₄）₂SO₄-FeSO₄-6H₂O]

在空气中比一般亚铁盐稳定，是化学分析中常用的还原剂．某研究性学习小组用图2所示的实验装置来制取摩尔盐，实验步骤如下，回答下列问题：

（1）用30%的NaOH溶液和废铁屑（含少量油污、铁锈、FeS等）混合、煮沸、冷却、分离，将分离出的NaOH溶液装入③中．

（2）利用容器②的反应，向容器①中通入氢气，应关闭活塞______，打开活塞______（填字母）．向容器①中通人氢气的目的是______．

（3）待锥形瓶中的铁屑快反应完时，关闭活塞B、C，打开活塞A，继续产生的氢气会将锥形瓶中的硫酸亚铁（含极少部分未反应的稀硫酸）压到饱和硫酸铵溶液的底部．在常温下放置一段时间，试剂瓶底部将结晶出硫酸亚铁铵，抽滤，制得硫酸亚铁铵晶体．图3是抽滤装置的一部分，其中正确的是______．（填A或B）

（4）为了确定产品中亚铁离子的含量，研究小组用滴定法来测定．若取产品24.50g配成100mL溶液，取出10.00mL用0.1000mol-L^-1KMnO₄酸性溶液滴定，消耗KMnO₄溶液10.00mL．

已知高锰酸钾与Fe²⁺的离子方程式为：MnO

-4

+5Fe²⁺+8H⁺=Mn²⁺+5Fe³⁺+4H₂O

试求产品中摩尔盐的质量分数______．（NH₄）₂SO₄-FeSO₄-6H₂O的相对分子质量为392．

目前我国单位建筑面积采暖能耗相当于气候条件相近发达国家的( )。

A．2～3倍

B．3～5倍．

C．1～2倍

D．2～3.5倍

"In the long run," as John Maynard Keynes observed, "we are all dead. " True. But can the (1) run be elongated in a way that makes the long run (2) And if so, how, and at what cost People have dreamt of (3) since time immemorial. They have sought it since the first alchemist put an elixir of (4) on the same shopping list as a way to turn lead into gold. They have (5) about it in fiction, from Rider Haggard’s "She" to Frank Herbert’s "Dune". And now, with the growth of (6) knowledge that has marked the past few decades, a few researchers believe it might be within (7) .

To think about the question, it is important to understand why organisms-people (8) -age in the first place. People are like machines: they (9) That much is obvious. However, a machine can always be (10) A good mechanic with a stock of spare parts can keep it going (11) . Eventually, no part of the (12) may remain, but it still carries on, like Lincoln’s famous axe that had three new handles and two new blade.

The question, of course, is whether the machine is worth (13) . It is here that people and nature (14) . Or, to put it slightly (15) , two bits of nature disagree with each other. From the individual’s point of view, (16) is an imperative. You cannot reproduce unless you are alive. A fear of death is a sensible evolved response and, since (17) is a sure way of dying, it is no surprise that people want to stop it in its tracks. Moreover, even the appearance of ageing can be (18) . It (19) the range of potential sexual partners who find you attractive-since it is a sign that you are not going to be (20) all that long to help bring up baby-and thus, again, curbs your reproduction.

1（）

A.short

B.long

C.shorter

D.longer

欧律斯透斯(Eurystheus)