基因工程的正确操作步骤是 ①构建基因表达载体 ②将目的基因导入受体细胞 ③检测目

题型:选择题

问题:

基因工程的正确操作步骤是

①构建基因表达载体 ②将目的基因导入受体细胞 ③检测目的基因的表达是否符合特定性状要求 ④获取目的基因 [ ]

A.③②④①

B.②④①③

C.③④①②

D.④①②③

考点:基因工程的基本操作程序
题型:选择题

A  Deaf  Person's  Joke

Something was wrong with Jack's ears after he was much better from a serious illness. Several months later he went to a doctor. The doctor told him that he was deaf of both ears. Jack was sad. He was afraid to lose his work. So he did not like people to know this.

One evening he asked some friends to dinner. While they were sitting at the table, one of his friends told an interesting joke. Everyone laughed and Jack laughed louder than anyone else. He said, “That was a very interesting joke, but I know a more interesting one. Would you like to hear it?” All his friends said OK to him, so Jack began to tell his joke. All his friends were listening to him with smiles. When the joke ended, everyone laughed louder than before and Jack laughed happily, too. He was very glad because he thought that his must be more interesting than his friend's. But he didn't know that he had made a fool of himself(出丑;闹笑话) because his joke was the same as the first one.

小题1:When was Jack deaf of both ears?

A.After he came back from work.

B.After a serious illness.

C.After seeing a doctor.

D.After being a doctor.小题2: Why did Jack not like people to know he was deaf?

A.He was afraid to lose his work.

B.He was afraid of his friends.

C.He didn't want to lose his face.

D.He was afraid that his wife would leave him.小题3: What did Jack do after hearing his friend's joke?

A.He laughed as loudly as others.

B.He didn't laugh.

C.He laughed louder than anyone else.

D.He only smiled.小题4:Jack laughed because _____.

A.all the others were laughing

B.he could tell the same joke himself, too

C.he wanted to show that there was nothing wrong with his ears

D.his friend's joke was interesting小题5:Jack's friends laughed a lot louder than before because _____.

A.the joke he told was more interesting

B.it was as interesting as the first

C.all his friends liked his joke better

D.it was the same joke as his friend's

题型:选择题

“世上最著名的衣服,不是珍珠衫,不是羽衣霓裳,羞愧才是最美的衣服。”这句话说明[ ]

A.身穿最好的衣服应该感到惭愧羞耻

B.羞耻之心是我们缺点错误最好的装饰

C.羞耻之心是我们塑造美好心灵的衣服

D.珍珠衫和羽霓裳都不是世界上最美丽的衣服

题型:选择题
It's not easy to learn English well. _____ as much as possible is necessary.

A. Having read
B. Read
C. Reading
D. To have read
题型:选择题
About ten years ago, I was on a plane going west, and a young woman boarded and sat across the aisle (过道) from me. I ___21____ her for two reasons. She was very attractive, and she was holding a teddy bear about half her ____22____. I teased her by asking if she had a ___23___ for the bear. She laughed and said no.
About halfway through the flight she ___24____ over and told me she was going to Tucson to enter rehab (进行康复治疗). She ___25___ to share her life story with me. She had been working as a dancer in a nightclub. That ___26____ had led her down a dark ____27____ to drugs and alcohol. As I listened to her story. I was ____28____ at all she had gone through. I listened to all she shared and told her I was sure she was going to ____29___ it. At the end of the flight, she ___30____ me for listening to her.
A few years later, I got a ___31____ in the mail saying, “Wow, it’s been years since we met on that plane. It is ___32____ how you touched my life.” She went on to tell me that she had ____33____ to stay away from drugs, and had been working for a radio station. She felt she had achieved things she could not have ____34___ that day on the plane. We agreed to set up a time to get ___35___.
When I saw her, she was ____36____ the attractive young woman I remembered. She told me that that little ___37___ we had had turned her life around. She had boarded the plane ___38___ anything would work in her life, and my affirmation (肯定) of her as a person and of her ___39___ had given her the last bit of ___40___ she needed to work through her problems.
The young woman taught me it’s never too late to make a new start in life.
小题1:
A.foundB.helpedC.recognizedD.noticed
小题2:
A.shapeB.sizeC.weightD.leg
小题3:
A.nameB.friendC.ticketD.cloth
小题4:
A.movedB.leanedC.lookedD.pulled
小题5:
A.agreedB.learned C.continuedD.refused
小题6:
A.mannerB.feeling C.eventD.lifestyle
小题7:
A.doorB.pathC.keyD.point
小题8:
A.disappointedB.worried C.surprisedD.blamed
小题9:
A.ownB.reachC.leaveD.make
小题10:
A.criticizedB.avoidedC.thankedD.remembered
小题11:
A.noteB.word C.caseD.text
小题12:
A.effectiveB.amazingC.easyD.clear
小题13:
A.managedB.triedC.decidedD.worked
小题14:
A.realizedB.produced C.requiredD.imagined
小题15:
A.throughB.alongC.togetherD.off
小题16:
A.neverB.stillC.onceD.even
小题17:
A.expectationB.explanationC.informationD.conversation
小题18:
A.doubtingB.promisingC.believing D.admitting
小题19:
A.conditionB.discoveriesC.criticism D.possibilities
小题20:
A.delightB.interestC.strengthD.character
题型:选择题

什么是“四不用火”

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