方程(x-1)(x+2)=0的两根分别为( ) A.-1,2 B.1,2 C.-

题型:选择题

问题:

方程(x-1)(x+2)=0的两根分别为(  )

A.-1,2

B.1,2

C.-1,-2

D.1,-2

考点:一元二次方程的解法
题型:选择题

Ever thought of moving to a new country? How about starting a new country? Patri Friedman is planning to do just that. He left Google years ago to set up the Seasteading Institute. And his dream is to build seasteads-----floating micro-nations in the middle of the ocean.

So, what will life on a seastead be like? Probably a bit like life on a cruise liner (游轮), but much larger, with shops, gyms, swimming pools, schools and other areas. In fact, the early seasteads may actually be specially-rebuilt cruise liners. But as science advances, Friedman believes they’ll become more like floating cities, with several hundred people.

Seasteading raises a lot of questions. First of all, how will the new countries make money? The Seasteading Institute has suggested several money-making ideas, including ocean-based theme parks, casinos (赌场) and fish farming. There’s also the questions of safety. With storms, typhoons and pirates (海盗) , the high seas are a dangerous place. However, the Institute says that it can stand bad weather and prevent crimes with its well-designed systems.

So, is this just a day dream? Well, maybe not. One of the people behind the project is Peter Thiel. He founded PayPal and was one of the first investors (投资者) in Facebook. So far, he’s donated $ 500,000 to the project.

And Friedman isn’t wasting any time. He recently announced the creation of the Poseidon Award. This will be given to the first seastead with fifty people. Friedman is hoping to hand out the award in 2015.

小题1:Where did Friedman use to work?

A.In Facebook.

B.In Seastead Institute .

C.In PayPal.

D.In Google.小题2:A future seastead may be most likely to look like ___________________.

A.a cruise liner

B.a floating city

C.a theme park

D.a fishing farm小题3:What can we infer from the passage?

A.Friedman is planning to move to a new country.

B.Friedman is worried about the safety of seasteads.

C.Friedman has got some supporters for his project.

D.Friedman has already won the Poseidon Award.小题4:Which of the following can be the best titles of this passage?

A.Seasteading: a new idea of living

B.Seasteading: a wild way of farming

C.Peter Thiel: a man behind the project

D.Patri Friedman: a crazy day dreamer

题型:选择题

下列选项中有阳光直射的温度带是(  )

A.热带

B.北温带

C.北寒带

D.南温带

题型:选择题

抢救成功率是反映医院()。

A.住院工作效率指标

B.门诊工作效率指标

C.住院医疗工作质量指标

D.门诊医疗工作质量指标

E.医院医疗工作质量指标

题型:选择题

下列选项中,()不属于简报的报头。

A.简报名称

B.期号

C.编印单位

D.印发数量

题型:选择题

哪位人物较早提出以太是不存在的观点:()

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