不易产生成瘾性，已列入非麻醉药品的是（） A．可待因 B．喷他佐辛 C．二氢埃托菲

下列各组物质中，前者属纯净物，后者属混合物的是（　　）

A．汽油、丁烷

B．钢、生铁

C．水、水煤气

D．乙烯、聚氯乙烯

重庆市政府2006年度“八大民心工程”之首的重点建设项目--万开（万州至开县）高速公路于2006年12月27日建成通车．一辆“长安”小汽车从万州开往开县，路程缩短为原来的1/2，速度提高为原来的2倍，原来需2小时的行程，现在只需______小时到达．当它以72km/h的速度通过西南地区最长的隧道--铁峰山2号隧道需要301秒钟，则隧道长______米．

Recently, I experienced a wonderful lesson in how little things still mean a lot. My brother, mother and I live in a very rural district on the Big Island of Hawaii. Our farm is at least a dozen miles from the most basic of services. Consequently, we take weekly trips to COSTCO to procure fuel and supplies. About a month ago, we’d finished loading up the SUV and prepared to leave. As I settled into my seat, I glanced down at the roadside, when a piece of paper caught my eye. I picked it up and read it carefully. Instantly, I was grateful I did.

The form turned out to be a receipt from the State Motor Vehicle Division, documenting the owners’ payment of their Vehicle’s Registration fees. Quickly, I put myself in their shoes and figured: no one would throw this out, especially if it was current. I also looked over the form for contact or any personal data, perhaps a license tag or telephone number. But that seemed impractical. Although the form had been born on the wind, where in the busy, crowded parking lot would I find the owners? Had it been lying there for a few minutes or a week? So I checked the date, the fees paid, noted the names of the owners and pocketed the receipt. Recalling the parable of the Good Samaritan, I concluded that the best and easiest step to take was to put the form in an envelope addressed to the couple and send it to them by post. Further, I imagined how crazy I’d be if I had misplaced my receipt. Much easier to attempt returning it than to leave them angry, upset, etc. over the loss.

By the end of the week, I received a beautiful thank-you letter from a very grateful and happy couple containing a hand written message and a gift card to use at any Starbuck’s. In her note, the wife explained how a gust of wind snatched their receipt from a pocket in her car’s passenger door. They had panicked and searched crazily for quite some time before giving up. It felt great to know I’d helped someone avoid a major loss by doing something that at first glance seemed minor or even unimportant.

小题1:What did the author really mean when he said “Instantly, I was grateful I did.”?

A．He was lucky to notice the paper on the roadside.

B．He was happy to do shopping in the district for it was convenient.

C．He was right to pick the paper up because it was important.

D．He was thankful to pick up the paper because he found it for a long time.小题2:Which of the following statements is TRUE according to the short passage?

A．I rode my car to COSTCO to buy supplies a month ago.

B．The receipt was out of date, so the owner threw it away.

C．I waited on the roadside for the receipt owner for half a day.

D．I called up the owner to take back the receipt.小题3:The author decided to give the paper back to the owner because ______.

A．it was useless for him

B．he knew the owner was upset about losing it

C．the owner asked him to do so

D．he knew the owner would reward him for it小题4:Which would be the best title for this passage?

A．How I helped the couple

B．The loss of an important receipt

C．The owner of the receipt

D．Little things still mean a lot

下面哪一项是公文制发的程序之一?()

A.确定发文机关

B.确定发文日期

C.装订

D.复核

许多好书的价值仅限于某一特定历史时期，它们没有展示出那种______的吸引力，这种吸引力来源于用各个时代、各个地区的人都能理解的方式来讨论各时代、各地区的人都要______的问题。
填入划横线部分最恰当的一项是______。

A．一如既往 解决
B．历久弥新 考察
C．一唱百和 思考
D．经久不衰 面对