急性心肌梗死时最常见的心律失常是A．心房颤动 B．室性早搏及室性心动过速 C．房室传

火炬及排气筒塔架焊接时，塔柱上下、纵向焊缝应错开，间距不得小于（）。

A．20mm

B．200mm

C．2m

D．20m

下列对联写的是哪处名胜？把相应的序号填在括号里。

①定三分，烧博望，出祁山，大名不朽；气周瑜，屏司马，擒孟获，千古流传。    （    ）   

②朱仙镇血战丧敌胆，风波亭长恨遗千秋。  （    ）  

③歌吟总带忧民泪，颠沛仍怀爱国心。    （    ）

备选景点：A.巩义杜甫故居  B．汤阴岳飞庙  C．南阳卧龙岗    D．嵩山少林寺

Going green seems to be fad(时尚)for a lot of people these days. Whether that is good or bad, we can’t really say, but for the tow of us, going green is not a fad but a lifestyle.

On April22, 2011, we decided to go green every single day for an entire year. This meant doing 365 different green things, and it also meant challenging ourselves to go green beyond easy things. Rather than recycle and reduce our energy, we had to think of 365 different green things to do and this was no easy task.

With the idea of going green every single day for a year, Our Green Year started. My wife and I decided to educate people about how they could go green in their lives and hoped we could show people all the green things that could be done to help the environment. We wanted to push the message that every little bit helps.

Over the course of Our Green Year, we completely changed our lifestyle. We now shop at organic(有机的)stores. We consume less meat, choosing green food. We have greatly reduced our buying we don’t need. We have given away half of what we owned through websites. Our home is kept clean by vinegar and lemon juice, with no chemical cleaners. We make our own butter, enjoying the smell of home-made fresh bread. In our home office anyone caught doing something ungreen might be punished.

Our minds have been changed by Our Green Year. We are grateful for the chance to have been able to go green and educate others. We believe that we do have the power to change things and help our planet.

小题1:What might be the best title for the passage?

A．Going Green.

B．Protecting the Planet.

C．Keeping Open-Minded

D．Celebrating Our Green Year.小题2:It was difficult for the couple to live a green life for the whole year because_________.

A．they were expected to follow the green fad

B．they didn’t know how to educate other people

C．they were unwilling to reduce their energy

D．they needed to perform unusual green tasks小题3:What did the couple do over the course of Our Green Year?

A．They tried to get out of their ungreen habits.

B．They ignore others’ ungreen behavior.

C．They chose better chemical cleaners.

D．They sold their home-made food.小题4:What can we infer form the last paragraph?

A．The government will give support to the green people.

B．The couple may continue their project in the future.

C．Some people disagree with the couple’s green ideas.

D．Our Green Year is becoming a national campaign.

我国安全生产的基本原则有（）。

A.管生产必须管安全

B.安全具有否决权

C.工程建设项目坚持“三同时”

D.坚持事故处理“四不放过”

圆珠笔（签字笔、中性笔）是我们很熟悉的书写工具。在设计制造时，笔芯内的油墨量与金属笔嘴的寿命存在科学的对应关系，且笔芯上端通常都留有一小孔。关于这些设计的说法不正确的是（）

A.油墨量的设计遵循了设计的经济原则

B.小孔的设计遵循了设计的科学原则

C.油墨量和小孔的设计都是为了减少用料，降低成本

D.设计小孔的主要意图是平衡气压，书写时便于油墨从笔嘴顺畅流出