根据图回答下列问题：
（1）根据图判断此细胞的类型：______细胞，判断的理由是______．
（2）该图表示______，其结果是______．
（3）该图发生的先后顺序为（填写字母）______．
（1）动植物细胞的基本结构是细胞膜、细胞质、细胞核，此外植物细胞还具有细胞壁、液泡、叶绿体等结构．上图因具有细胞壁，所以为植物细胞．
（2）细胞分裂就是一个细胞分成两个细胞的过程，其结果是细胞的数目增多．
（3）植物细胞分裂的过程为：先是细胞核一分为二，接着细胞质一份为二，最后在两个细胞核的中央形成新的细胞壁和细胞膜，所以顺序应为：acdb
故答案为：（1）植物；细胞壁
（2）细胞分裂；细胞数目增多
（3）a c d b
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| It was at a concert that I happened to find David. He was holding his head at a strange angle as if he were staring down at something. Then the truth struck me. He was blind. The last thing he remembers __1__ was his daughter being born. Then the world went __2__. Bad luck is no stranger to this 44yearold man. His mother died of cancer, and his weak father had to __3__ 11yearold David to the care of the state. Things seemed always to go from bad to worse. Two years ago, his beloved guide dog pulled him out of the __4__ of a truck. David was not hurt. The dog was killed. But David does not feel sorry for himself. "These are just little obstacles you have to __5__ in your life," he said. He has to make a daily twohour trip to his working place-the Xray department of an emergency room. It was a hard job to __6__. Before he got it, David was determined to escape the workshop run by the Lighthouse, an organization __7__ to help blind people. He wanted a job of developing Xray film, something everyone, not just he, must do in the dark, including people with __8__ eyesight. The Lighthouse called many hospitals, with no result, __9__ they offered to pay his first three months' salary. David works alone in a dark room that smells of chemicals. He cannot wear gloves. __10__, he could not feel. Since this is an emergency room, lives can be put at risk or out of danger. His directress says she trusts him 100 percent. He makes $20,000 a year. But his motivation goes beyond money. "By working, I can actualize my own __11__. That's the most important!" he said. What a shining example for us to __12__! | |||
| ( )1. A.doing ( )2. A.blank ( )3. A.bring up ( )4. A.bottom ( )5. A.seek ( )6. A.deal with ( )7. A.intended ( )8. A.common ( )9. A.because ( )10. A.However ( )11. A.blindness ( )12. A.set | B. feeling B. colorful B. bring in B. path B. overcome B. get through B. attended B. poor B. if B. Unfortunately B. income B. take | C. seeing C. empty C. give up C. wheel C. surround C. take up C. offered C. normal C. in case C. Otherwise C. value C. hold | D. hearing D. silent D. give in D. search D. search D. come by D. devoted D. actual D. even though D. Besides D. experiences D. follow |