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问题 单项选择题

YB45型包装机为了防止五轮内框纸半圆导轨位置不好而造成内框纸在五轮处跑动和脱出的故障，需检查五轮内框纸半圆导轨，使内外导轨的导槽距离为内框纸切割宽度＋（）mm。

A、1

B、2

C、3

D、4

答案

参考答案：A

完形填空

阅读短文，根据要求完成下面各小题.

Michael went back to Fullerton, his home town .His visit to Fullerton was very special to him.① He was born there, he grew up there．But he hadn't been back there since he finished high school．

He went to places he hadn't been to for many years. He walked through the park and remembered the days he had walked through that same park with his friends．He passed by the field where he and his friends had played baseball every day after school. And he stood in front of the movie theater and thought about all the Saturday afternoons he had spent there，watching his favorite movie heroes and eating popcorn.

② 他做了已经很久没有做的事情。He had some home-made ice cream at the ice cream shop. He rode on the merry-go-round in the park，and he went fishing at the lake．For a little while，he felt like a kid again．

He saw people he hadn't seen in years．He visited several of his old neighbors．He said hello to the owners of the candy store near his house．And he also went to see Mrs．Riley, his tenth-grade science teacher．

Michael's trip back to Fullerton was a very nostalgic(怀旧的)experience for him．Going back to Fullerton brought back many memories of days gone by．

小题1:根据短文内容简要回答问题.

Michael went to places he hadn't been to for many years. Which places did he go?

                                         

小题2:根据短文内容简要回答问题.

Who did Michael visit?                                      

小题3:将短文中①处划线的句子译成汉语.                                            

小题4:将短文中②处划线汉语句子译成英语.                                          

小题5:请给短文拟一个适当的英文标题.                                              
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单项选择题

根据下面文字所提供的信息回答问题：

转基因作物商业化种植的发展速度较大， 1992年只有一个国家种植，到1996年增加到 6个，1999年为12个2003年为18个。1996年种植面积为170万hm2，1999年为1210万 hm2，2003年增加到6770万hm2。其中，美国、阿根廷、加拿大、巴西、中国和南非等国家的种植面积占全世界种植面积的99%。在转基因作物中，以大豆的种植面积最大，占58%；其次是玉米，占23%；棉花占12%，油菜占6%。其转基因性状，以耐除草剂为主，其次为抗虫性。在1996-2000年的五年间，耐除草剂转基因作物的种植面积占74%，抗虫性转基因作物的种植面积占19%。据国际农业生物技术应用机构统计，2003年全世界种植转基因作物的农民已有700万，比2002年又增加 100万。

我国的转基因研究始于20世纪80年代初，80年代中期生物技术已列人国家的“863”计划。1998年我国开始推广转基因抗虫棉，当年推广24万hm2，到2003年达到307万hm2，已占棉花种植面积60%，且国产转基因抗虫棉品种逐步占主导地位，到2004年已占近 7%。其他作物，比如水稻、小麦、玉米、油菜、花生、大豆等方面转基因技术的研究，在我国全面展开。

2003年我国的棉花种植面积约为多少万hm2？（）

A．480

B．512

C．580

D．623
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