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1、过去我将钱花在买衣服和零食上。
2、三年前老师告诉我们有许多贫困儿童没有衣物食品,更不能上学。
3、从那以后,我将零花钱捐给一个名为UNICEF的机构,此机构主要帮助儿童。
4、我为帮助别人而自豪,帮助别人很快乐。
⑴ 从苏云金芽孢杆菌中切割抗虫基因所用的工具是______________,此工具主要存在于__________中,其特点是_________________________________________________。
⑵ 苏云金芽孢秆菌一个DNA分子上有许多基因,获得抗虫基因常采用的方法是“鸟枪法”。具体做法是:用______________将苏云金芽孢杆菌的__________切成许多片段,然后将这些片段____________________________,再通过_______________转入不同的受体细胞,让它们在各个受体细胞中大量______________,从中找出含有目的基因的细胞,再用一定的方法把__________________分离出来。
⑶ 进行基因操作一般要经过的四个步骤依次是________________________________、____________________________________、___________________________________、____________________________________。 查看习题详情和答案>>
此题要求改正所给短文中的错误,对标有题号的每一行作出判断:
如无错误,在该行右边横线上画“√”,如有错误(每行只有一个),则按下列情况改正:
此行多一个词:把多余的词用斜线划掉,在该行右边横线上写出该词,并划上斜线( \ )。
此行缺一个词:在缺词处加上一个漏字符号(∧),在该行右边横线上写出该加的词。
此行错一个词;在错的词下面划一条横线,在该行右边横线上写出改正的词。
请在答题卡相应的位置答题。(每小题1分,共10分)
Do you like pop music? Most people does. 1.
One of the best bands are the New Ocean Waves. 2.
In the last twelve month,they’ve had three major 3.
Concerts.They’re going to appear on CCTV the next 4.
month.And then they going to go on a world 5.
tour in which they will perform in ten different 6.
cities.Be sure not miss them if they come to a 7.
city near you.They’re real nice people.Did you 8.
Know that they give half of the money they made 9.
to a charity for homeless childs? 10.
查看习题详情和答案>>
此题要求改正所给短文中的错误。对标题号的每一行作出判断:如无错误,则在该行右边横线上画一个勾(√);如有错误(每行只有一个错误)。则按下列情况改正:
该行多一个词:把多余的词用斜线(\)划掉,并在该行右边横线上写出该词,且也用斜线划掉。
该行缺一个词:在缺词处加一个漏字符号(∧),并在该行右边横线上写出该加的词。
该行错一个词:在错的词下面划一个横线(___),并在该行右边横线上写出改正后的词。
注意:该行若无错, 不要改。
It was sunny this afternoon. Mum and I go to 【小题1】________________
the park where is near my home for a walk. 【小题2】________________
When we were walking, I saw the little girl. She 【小题3】________________
was eating a banana. After she finished eating them, 【小题4】________________
she threw the banana skin on the ground into the 【小题5】________________
park. I walked over to pick it and told her it 【小题6】
was wrong to do so. If all of us do like that,
the park has become dirty. Then we can’t 【小题7】________________
enjoy by ourselves in it. All of us must 【小题8】________________
improve our environment and then we can 【小题9】________________
make our environment clean but beautiful. 【小题10】________________
选用所给的词组填空,每小题只能填一个词组,每个词组只能用一次。
| felt like in surprise catching up with right away be interested in sooner or later be able to by the way heard of getting ready for |
【小题1】 Everyone in our class is busy the coming exam.
【小题2】1 must leave home , or I'll be late for work.
【小题3】 I've the Great Wall a lot, but I've never been there.
【小题4】It's a pity that he won't come to your birthday party next Saturday.
【小题5】 The little girl looked at the unusually tall man . 查看习题详情和答案>>