问题 选择题
某农场有如图所示的六块田地,现有萝卜、玉米、油菜三类蔬菜可种.为有利于作物生长,要求每块田地种一类蔬菜,每类蔬菜种两块田地,每行、每列的蔬菜种类各不相同,则不同的种植方法数为(  ).
 
 
 
 
 
 
A.12            B.16          C.18           D.24
答案

答案:A

依题意,逐步就各行的实际种植情况进行分步计数:第一步,确定第一行的三块地的实际种植的方法数有=6(种);第二步,确定第二行的三块地的实际种植的方法有2(种).因此,由乘法原理得知,满足题意的种植方法共有6×2=12(种),选A.

单项选择题
阅读理解

A month after Hurricane Katrina, I returned home in New Orleans. There lay my house, reduced towaist-high ruins, smelly and dirty.

Before the trip, I’d had my car fixed. When the office employee of the garage was writing up the bill,she noticed my Louisiana license plate. “You from New Orleans?”she asked I said I was, “No charge.”She said, and firmly shook her head when I reached for my wallet. The next day I went for a haircut, and the same thing happened.

As my wife was studying in Florida, we decided to move there and tried to find a rental house that we could afford while also paying off a mortgage (抵押贷款〉on our mined house. We looked at many places, but none was satisfactory. We’d began to accept that we*d have to live in extremely reduced circumstances for a while, when I got a very curious e-mail from a James Kemmedy in California. He’d read some pieces I’d written about our sufferings for State, the online magazine  and wanted to give us (""no conditions attached’)a new house across thelake from New Orleans.

It sounded too good to be true, but I replied, thanking him for his exceptional generosity, that we had no plan to go back. Then a poet at the University of Florida offered to let his house to me, while he went to England on his one-year paid leave. The rent was rather reasonable. I mentioned the poet’s offer to James Kemdedy, and the next day he sent a check covering our entire rent for eight months.

Throughout this painful experience, the kindness of strangers has done much to bring back my faith in humanity. It’s almost worth losing your worldly possessions to be reminded that people are really nice when given half a chance.

小题1:The garage employee’s attitude toward the author was that of          

A.unconcern

B.sympathy

C.doubt

D.tolerance小题2:What do we know about James Kemnedy?

A.He was a writer of an online magazine.

B.He was a poet at the University of Florida

C.He offered the author a new house free of charge.

D.He learned about the author’s sufferings via e-mail小题3:It can be inferred from the text that         

A.the author’s family was in financial difficulty

B.rents were comparatively reasonable despite the disaster

C.houses were difficult to find in the hurricane-stricken area

D.the mortgage on the ruined house was paid off by the bank小题4:The author learned from his experience that         

A.worldly possessions can be given up when necessary

B.generosity should be encouraged in some cases

C.people benefit from their sad stories

D.human beings are kind after all.