在三投影面体系中，侧平面（）于侧立投影面、（）于正立投影面、（）于水平投影面。

由上海话剧艺术中心制作的大型历史话剧《商鞅》，塑造了战国时期大改革家商鞅的鲜明形象，下列情节不可能出现在剧情中的是[ ]

A．公元前356年，秦孝公召见商鞅，支持他开始变法

B．商鞅变法前，一个人因为私自买卖土地被判刑

C．商鞅变法后，到地方某县视察，发现农民都在努力耕种，妇女在努力耕织

D．一位旧贵族在宴请商鞅吃饭，感谢在变法中给予他们的特权

下列各溶液中，一定能大量共存的离子组是（   ）

A．室温下，由水电离出c（OH^－）=1×10^-12 mol·L^－1的溶液中：K^＋、HCO₃^－、Na^＋、Cl^－

B．含有0．1 mol·L^－1 Fe^2＋的溶液中：NH₄^＋、SO₄^2－、H^＋、NO₃^－

C．澄清透明的溶液中：Cu^2＋、Mg^2＋、SO₄^2－、Cl^－

D．室温下，pH=1的溶液中：Na^＋、Cl^－、K^＋、CH₃COO^－

冬天北方下雪时，常用融雪剂清理路面，醋酸钾（CH₃COOK）是效果较好的融雪剂，下列关于1mol CH₃COOK的叙述正确的是（　　）

A．摩尔是国际单位制中七个基本物理量之一

B．CH₃COOK的摩尔质量为98g

C．1mol CH₃COOK含有2mol氧

D．1mol CH₃COOK含有3×6.02×10²³个H

如术中发现胰头部一轮廓不规则肿物，边界尚清，与周围组织无粘连，未触及肿大淋巴结，宜采用何种术式

A．Whipple胰头十二脂肠切除术

B．胃空肠吻合术

C．全胰切除术

D．胆囊十二指肠吻合术

E．胆总管十二指肠吻合术

Just as the world’s most respected scientific bodies have confirmed that the world is getting hotter, they have also stated that there is strong evidence that humans are driving the warming. Countless recent reports from the world’s leading scientific bodies have said the same thing. For example, a 2010 summary of climate science by the Royal Society stated that: “There is strong evidence that the warming of the Earth over the last half-century has been caused largely by human activity.”

The idea that humans could change the planet’s climate may be counter-intuitive(与直觉不符的), but the basic science is well understood. Each year, human activity causes billions of tons of greenhouse gases to be released（释放）into the atmosphere. As scientists have known for years, these gases hold heat that would otherwise escape to space, wrapping the planet in an invisible blanket.

Of course, the planet’s climate has always been changing thanks to “natural” factors(因素) such as changes in solar or volcanic（火山的）activity, or cycles relating the Earth’s going around the sun. According to the scientific literature, however, the warming recorded to date matches the pattern of warming we would expect from a build-up of greenhouse gas in the atmosphere – not the warming we would expect from other possible causes.

Even if scientists did discover another reasonable explanation for the warming observed so far, that would beg a difficult question. As Robert Henson puts it in The Rough Guide to Climate Change: “If some newly discovered factor can account for the climate change, then why aren’t carbon dioxide（二氧化碳）and the other greenhouse gases producing the warming that basic physics tells us they should be?”

The only way to prove with 100% certainty that humans are responsible for global warming would be to run an experiment with two identical Earths – one with human influence and one without. That obviously isn’t possible, and so most scientists are careful not to state human influence as an absolute certainty.

小题1: In most scientists’ opinion, the global warming is mainly caused by ________.

A．solar activity

B．volcanic activity

C．the Earth’s going around the sun

D．human activity小题2:The text is developed by ________.

A．giving typical examples

B．following the order of space

C．analyzing a theory and arguing it

D．comparing and finding differences小题3:The underline word “identical” means ________.

A．totally different

B．exactly the same

C．extremely important

D．relatively independent小题4: Which of the following can be the best title?

A．Are All the Scientists Really Scientific?

B．Where Is Global Warming Leading Us to?

C．Are Humans Definitely Causing Global Warming?

D．What’s Relation of Global Warming and Greenhouse Gases?