美国发送伊拉克战争的原因不包括（）。A、控制战略要地 B、控制中东石油 C、反恐指向伊拉

某种植物同时具有A、B基因时能开紫花，否则都开白花。把开紫花的植物进行测交，测交后代中有一半开紫花、一半开白花。若将测交后代中开紫花的植物自交，自交后代中开白花的比例是[ ]

A．1/4

B．9/16

C．7/16

D．1/16

劳动法的立法宗旨在于（）。

A.规范企业的行为

B.规范劳动者行为

C.保护劳动者的合法权益

D.规范劳动力市场

货币当局大量买进外汇时，将导致本币（）。

A.汇率上涨 

B.汇率下跌 

C.退出流通 

D.迅速回笼

某工程原合同规定分两阶段进行施工，土建工程21个月，安装工程12个月。假定以一定量的劳动力需要量为相对单位，则合同规定的土建工程量可折算为310个相对单位，安装工程量折算为70个相对单位。合同规定，在工程量增减10%的范围内，作为承包商的工期风险，不能要求工期补偿。在工程施工过程中，土建和安装的工程量都有较大幅度的增加。实际土建工程量增加到430个相对单位，实际安装工程量增加到117个相对单位，则承包商可以提出的工期索赔额为( )个月。

A．5.5

B．6.2

C．11.7

D．12.8

阅读理解。

     A month after Hurricane Katrina, I returned home in New Orleans. There lay my house, reduced to

waist-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 ruined house. We looked at many places,

but none was satisfactory. We'd begun 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 Kennedy in California. He'd read some pieces

I'd written about our sufferings for Slate, the online magazine, and wanted to give us ("no conditions attached")

a new house across the lake from New Orleans.

      It sounded too good to be true, but I replied, thanking him for his exceptional generosity, that we had no

plans 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

Kennedy, 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.

1. The garage employee's attitude toward the author was that of ____.

A. unconcern

B. sympathy

C. doubt

D. tolerance

2. What do we know about James Kennedy?

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.

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.

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.