环境管理作业指导文件是侧重于某一局部活动的规定，目的是指导具体岗位的实际（），使环境

计算：

（1）-P•（-p）⁴•[（-p）³]⁵．

（2）（y²）³+（y³）²-2y•y⁵

（3）（m-n）²•[（n-m）³]⁵

（4）a³•a⁵+a³•（-a³）+（-a²）³+（-a²）⁴．

近日，广西龙江河镉污染事件备受关注，受污染水体镉污染高峰值一度高达80倍，污染事件波及河段长约300公里，饮水安全受到严重威胁，下游柳州市一度发生百姓抢水风波。据介绍，镉是人体不需要的元素，进入人体后会产生不可逆的毒害作用：一是肾脏力图排出镉的时候，镉对肾功能的损害会不断加重；二是镉进入细胞内不可逆转地取代钙，导致钙流失，出现全身骨头疼、骨软化和骨折。此外，对生殖、肿瘤、心血管、内分泌等方面也有危害。这说明

A．我国环境问题依然严峻，不容忽视

B．环境问题危害人民群众的生命健康

C．环境问题影响到经济社会的可持续发展

D．经济建设和环境保护要协调发展

强制循环锅炉可分为（）强制循环和（）强制循环两种。

某种自花传粉的豆科植物，同一植株能开很多花，不同品种植株所结种子的子叶有紫色也有白色。现用该豆科植物的甲、乙、丙三个品种的植株进行如下实验。

实验四所结的297粒紫色子叶种子中杂合子的理论值为（）粒。

There is a difference between science and technology. Science is a method of answering (1) questions; technology is a method of solving practical problems. Science has to do with discovering the facts and relationships between (2) phenomena in nature and with establishing theories that (3) to organize these facts and relationships; technology has to do with tools, techniques, and (3) for applying the findings of science. Another (5) between science and technology has to do with the progress in each.

Progress in science (6) the human factor. Scientists, who seek to understand the universe and know the truth within the highest degree of (7) and certainty, cannot (8) their own or other people’s likes or dislikes or to popular ideas about the fitness of things. What scientists discover may shock or (9) people-as did Darwin’s theory of evolution. But even an unpleasant truth is (10) than likely to be useful; besides, we have the choice of refusing to believe it! But (11) so with technology; we do not have the choice of refusing to hear the sound produced by a supersonic aircraft flying overhead; we cannot refuse to breathe polluted air. (12) science, progress in technology must be measured (13) the human factor. The purpose of technology is to serve people—people (14) , not merely some people; and future generations, not merely those who presently wish to (15) advantage for themselves.

We are all familiar with the (16) use of technology. Many people blame technology itself (17) widespread pollution, resource depletion (枯竭) and even social decay in general—so much (18) the promise of technology is " (19) " That promise is a cleaner and healthier world. If wise applications of science and technology do not (20) a better world, what else will

4（）

A.procedures

B.facilities

C.proceedings

D.apparatuses