下列换算过程正确的是（） A．10m/s=（10×km）/（h）=36km/h

Ever since the economist David Ricardo offered the basic theory in 1817, economic scripture has taught that open trade — free of tariffs, quotas, subsidies or other government distortions — improves the well-being of both parties. U.S. policy has implemented this doctrine with a vengeance. Why is free trade said to be universally beneficial The answer is a doctrine called "comparative advantage".
Here’s a simple analogy. If a surgeon is highly skilled both at doing operations and performing routine blood tests, it’s more efficient for the surgeon to concentrate on the surgery and pay a less efficient technician to do the tests, since that allows the surgeon to make the most efficient use of her own time.
By extension, even if the United States is efficient both at inventing advanced biotechnologies and at the routine manufacture of medicines, it makes sense for the United States to let the production work migrate to countries that can make the stuff more cheaply. Americans get the benefit of the cheaper products and get to spend their resources on even more valuable pursuits. That, anyway, has always been the premise. But here Samuelson dissents. What if the lower-wage country also captures the advanced industry
If enough higher-paying jobs are lost by American workers to outsourcing, he calculates, then the gain from the cheaper prices may not compensate for the loss in U.S. purchasing power.
"Free trade is not always a win-win situation," Samuelson concludes. It is particularly a problem, he says, in a world where large countries with far lower wages, like India and China, are increasingly able to make almost any product or offer almost any service performed in the United States.
If America trades freely with them, then the powerful drag of their far lower wages will begin dragging down U.S. average wages. The U.S. economy may still grow, fie calculates, but at a lower rate than it otherwise would have.

As we know，there     1   four seasons in China . It’s    2     in spring（春）, hot in   3     , cool in autumn(秋) and cold in    4    . My    5  season is winter. Sometimes it snows（下雪）. Everything is all white. The world    6    clean and fresh(新鲜). I can go skating then.

But Kitty likes summer     7     than winter. She says summer is    8     for sports. She can go   9    ,  sometimes in a lake and sometimes in a river. She    10   it very much .

1. A.  have           B. is             C. are             D. be

2. A.  warm          B. cool          C. cold           D. hot

3. A.  spring         B. summer      C. autumn       D. winter

4. A.  spring         B. summer      C. autumn       D. winter

5. A.  best            B. better         C. like best      D. favourite

6. A.  looks          B. watches      C. sees            D. looks at

7. A.  good           B. well          C. better          D. best

8. A.  bad            B. good           C. well         D. very

9. A.  swiming      B. swim          C. to swim      D. swimming

10. A.  enjoy         B. enjoys         C. wants         D. like

保持信息在1秒钟以内的记忆是（）。

A.短时记忆

B.长时记忆

C.感觉记忆

D.永久记忆

表达式Len(Str(1.3))Mod 2的值为______。

旅客列车发生火灾或爆炸时应急处置预案。