以下压力损失最小的调节阀是（） A.双座阀 B.蝶阀 C.球阀 D.闸阀

下面现象不属于生命现象的是（　　）

A．夏季炎热人会出汗

B．秋季树叶黄

C．跳舞草随歌声摆动

D．铁刀生锈

I happened_______with him when he was hit by a stone.

A．I was talking

B．talking

C．to talk

D．to be talking

Passage 2 Seventeen years after the fall of the Berlin wall, a reunified Germany will throw open its doors to the world. Germany 2006 will be a place where people from all around the world will be welcomed by friends. The tournament is being held on the finest stage in the world, one whose symbolism far transcends the boundaries of sport. Hark back to Germany’s triumph at the 1954 FIFA World Cup in Switzerland, which sealed the country’s return to the international fold in the most beautiful manner possible.// In 2006, Germans will have the opportunity to rectify certain cliches and preconceived ideas. The world will have the chance to see what a fantastic country Germany truly is: the beauty and diversity of its landscapes, its rich cultural heritage and the intelligence and good humor of its people. As for the legendary German work ethic and organizational skills, I am pleased to say those perennial qualities are alive and well -- and we at FIFA are only too happy to take advantage of them.// For at all levels, the overall investment in any World Cup tournament is immense. The event is financially supported by the German state, but also by the "lender" and the Host Cities. I would like to take this opportunity to offer my heartfelt thanks to all those who are currently working with such passion and commitment to make the occasion a memorable one. Today’s efforts will bear fruit tomorrow.German football, for example, will boast twelve spanking new or vastly improved stadiums in 2006. The whole German population too will benefit in terms of better transport and reception infrastructures.// Football clubs, schools and people all over the land have really got behind this great event, providing further proof, if any were needed, of the prominent role football plays in all our lives. In this respect I would like to congratulate the German Football Association for inviting people from all walks of life to take part in this great event. Like Mexico, Italy and France, Germany is now organizing its second FIFA World Cup. Back in 1974 when it first held the World Cup, only sixteen sides took part, including the now-defunct German Democratic Republic (GDR) and Zaire. The latter were the only representative from the African continent and conceded fourteen goals with no reply.// The 2006 tournament will be a vastly different affair. Thirty-two teams will have qualified, including five from Africa, all of whom now perform at a far higher level. These performances bear witness to FIFA’s efforts in the last quarter of a century to help the nations of the football world to compete on an equal footing. I will have the immense pleasure of welcoming you amongst my friends in Germany. We look forward to seeing you in 2006 to celebrate this unity!//

判断并改正：根据交易费用理论，企业的最佳规模为交易费用与组织费用相等时的规模。

妊娠期间应慎戒房事，必须避免房事的时间是：

A．妊娠1个月以内和9个月以后

B．妊娠1个半月以内和8个半月以后

C．妊娠2个月以内和8个月以后

D．妊娠2个半月以内和7个半月以后

E．妊娠3个月以内和7个月以后