将R1=10与R2=15电阻串联在电路中，则两电阻流过的电流之比I1：I2=__
题型：填空题
问题：
将R1=10与R2=15电阻串联在电路中，则两电阻流过的电流之比I1：I2=______，两电阻消耗的电功率之比P1：P2=______．
题型：填空题
第四部分：任务型阅读(共10小题；每小题l分，满分10分)
请认真阅读下列短文，并根据所读内容在文章后表格中的空格里填入一个最恰当的单词。注意：每个空格只填1个单词。请将答案写在答题卡上相应题号的横线上。
Experts debunk Maya doomsday（末日） predictions -- But that hasn't stopped books, movies from cashing in.
If the ancient Maya and filmmaker Roland Emmerich are correct, the apocalypse（大灾变） will happen very fast, maybe quicker than his new 2½-hour movie.
Predictions of global ruination are rippling around the globe with seismic（地震的） force, all loosely based on a 5,000-year Maya calendar that ends Dec. 21, 2012. Countless Web sites and blogs anticipate(预料) the end of days, as do various New Age groups and would-be prophets(预言者) offering guidance and how-to tips. On Amazon.com , you can read hundreds of book titles combining the year 2012 with terms such as “apocalypse,” “catastrophe” and “end of the world.”
As always, doomsday sells — and a lot of people are buying it.
“There's the psychobabble(心理呓语) aspect,” said Robert Epstein, former editor of Psychology Today magazine and a lecturer at the University of California San Diego. “It's the Sigmund Freud/death wish idea: People glom onto（对…感兴趣） doomsday predictions because there's some small part of them that wants to die, and die spectacularly（壮观的）. I don't believe it, but it's one way to look at this.”
It's Emmerich's way. The German director specializes in wreaking havoc on an epic scale, from climatic cataclysm in 2004's “The Day After Tomorrow” to angry aliens and reptiles in “Independence Day” and “Godzilla.” In “2012,” he finishes the job.
The digitized disasters of “2012” are oversized, overwrought and sometimes literally over the top, as when a humongous tsunami washes over the Himalayan mountains, whose average height exceeds 20,000 feet. Meanwhile in Los Angeles, a 10.5-magnitude earthquake — a temblor at least 30 times more powerful than any real quake ever recorded — yanks the city apart like a giant zipper, sending chunks sliding into the Pacific Ocean.
That's not physically possible, of course. Nor is a 10.5-magnitude quake, said Thomas Rockwell, a geologist at San Diego State University. To generate that much energy, “you'd need a rupture that extends all around the planet.”
All of that other stuff “is pure Hollywood bunk,” said Bernard Jackson at the UCSD Center for Astrophysics and Space Sciences.
Entertaining, though, unless you happen to believe the Maya really predicted the end of the world. They didn't, said Geoff Braswell, a UCSD anthropologist. The long-count calendar doesn't signal the end of anything except the end of that particular calendar. “It's just like a car odometer. Unfortunately, hardly anybody reads ancient Mayan. Modern media hype（骗局）, on the other hand, is almost inescapable.
Nicholas Christenfeld, a professor of psychology at UCSD, suggests a more elemental human need. Being swallowed by the Earth or incinerated in a giant fireball “fits neatly with the idea that people want to believe there's a plan, that existence isn't random and pointless,” Christenfeld said.
“We all missed creation, but if we can bear witness at the other end, be part of some grand cosmic destruction, that gives life meaning,” he said.
It helps, too, not to think very hard about the facts, said Lou Manza, a professor of psychology at Lebanon Valley College in Annville, Pa. “These claims have been around forever, and they have all been false, 100 percent wrong,” Manza said.
Of course, prognosticators（预言者, 占卜者） usually have an explanation for that, Christenfeld said.
“They might say it was a misinterpretation,” he said. “They got the date wrong. They might claim humanity acted in time to prevent the destruction. Or faith came to the rescue because people believed something bad was going to happen, it didn't have to happen.”
