instrument n 器具.工具.乐器 (1) A telephone is an instrument by which we can speak to people far away. 电话是一种器具.它可以使我们相距很远的人通话. (2) I love music very much ,so I’m going to learn to play an instrument this term. 我非常喜欢音乐.所以这学期我打算学习如保弹乐器. (3) A piano ,a guitar and an accordion are all music instruments.钢琴.吉他和手风琴都是音乐乐器. 查看更多

 

题目列表(包括答案和解析)

假设你是Li Ming,目前在英国参加Homestay夏令营,住在Mrs. Wiliam家。现在,你需要完成培训老师布置的作业:用英语描述你的房东或房东太太。
要点如下:
1.外貌特征(自己发挥);
2.和蔼友善,与你相处融洽;
3.经常照顾你的日常生活,如:洗衣等;
4.对中国的历史文化很感兴趣;
5.补充一至两点其他的看法。
注意:
1.词数60-80,文章开头已给出,不记入总词数;
2.文中不要提及你真实的校名和人名。
参考词汇:
friendly adj. 友善的 culture n. 文化 get along with 与……相处

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假设你是Li Ming,目前在英国参加Homestay夏令营,住在Mrs. Wiliam家。现在,你需要完成培训老师布置的作业:用英语描述你的房东或房东太太。

    要点如下:

    1.外貌特征(自己发挥);

    2.和蔼友善,与你相处融洽;

    3.经常照顾你的日常生活,如:洗衣等;

    4.对中国的历史文化很感兴趣;

    5.补充一至两点其他的看法。

    注意:

    1.词数60-80,文章开头已给出,不记入总词数;

    2.文中不要提及你真实的校名和人名。

    参考词汇:

    friendly adj. 友善的 culture n. 文化 get along with 与……相处

 

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假设你是Li Ming,目前在英国参加Homestay夏令营,住在Mrs. Wiliam家。现在,你需要完成培训老师布置的作业:用英语描述你的房东或房东太太。
要点如下:
1.外貌特征(自己发挥);
2.和蔼友善,与你相处融洽;
3.经常照顾你的日常生活,如:洗衣等;
4.对中国的历史文化很感兴趣;
5.补充一至两点其他的看法。
注意:
1.词数60-80,文章开头已给出,不记入总词数;
2.文中不要提及你真实的校名和人名。
参考词汇:
friendly adj. 友善的 culture n. 文化 get along with 与……相处

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材料:玉米的光合效率较水稻的高,这与玉米中磷酸烯醇式丙酮酸羧化酶(PEPC)有很大的关系。如何将玉米的这一种酶转移到水稻等植物上一直是植物生物学家的研究课 题之一。但实践证明,常规杂交育种手段很难如愿以偿。最近,有人利用土壤农杆菌介导法,将完整的玉米PEPC基因导入到了水稻的基因组中,为快速改良水稻的光合作用效率,提高粮食作物产量开辟了新途径。
(1)玉米和水稻很难利用常规杂交手段杂交的原因是                         
(2)获得PEPC基因后,将其导入土壤农杆菌的质粒中,以获得重组质粒,需要的工具酶
                                              
(3)玉米PEPC基因在水稻细胞中成功表达的标志是                         ,该过程包括                                  两个阶段。
(4)该技术定向改变了水稻的性状,这在可遗传变异的来源中属于___  _____。

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My work keeps me in Hong Kong most of the year,but I try to get away for a month in summer,usually in July.Now as you probably know,that’s the main 1 season in Europe.The favorite places for vacations and the famous cities are usually very 2 . But I’m not seeking(寻求) the sun—I can get lots of  3 in Hong Kong—and I’m certainly not seeking the crowds!So 4 I go on vacation,I buy a Train Pass(a kind of train ticket) that allows me first-class travel on most of the railways of Western Europe.First-class compartments(车厢) are 5 crowded and they are very comfortable.If you’re going on 6 trip, you can take a sleeping train for an extra charge.There are usually dining cars(餐车) in the train.

I find that train travel is restful and 7 .There’s always 8 to see.I particularly(特别地) enjoy 9 through Switzerland and Italy.You can get a very good 10 of what a country is like from a train because you don’t go too fast and you stop quite often.Also train travel is very safe,and I am never sick on a train 11 I am on a ship. Then there are always people to 12 to if you feel like a chat.

The reason that I seldom(很少) travel by plane is quite 13 : because train stations are usually built in the centre.I don’t have to 14 transport(运输工具), transport can be a problem when arriving by 15 

1.                A.vacation        B.visiting         C.cloudy   D.windy

 

2.                A.quiet          B.useful          C.exciting   D.crowded

 

3.                A.pleasure        B.daylight         C.sunshine  D.money

 

4.                A.when          B.where          C.what D.which

 

5.                A.always         B.hardly          C.certainly  D.nearly

 

6.                A.summer        B.overnight       C.day-time  D.vacation

 

7.                A.cheap          B.expensive       C.interesting D.lonely

 

8.                A.something      B.nothing         C.anything  D.everything

 

9.                A.running        B.walking         C.driving   D.travelling

 

10.               A.view           B.idea           C.seat  D.trip

 

11.               A.rather than      B.or             C.as    D.even though

 

12.               A.talk            B.speak          C.tell   D.say

 

13.               A.easy           B.wrong          C.right  D.simple

 

14.               A.find out        B.worry about     C.wait for   D.take away

 

15.               A.ship           B.train           C.air   D.car

 

 

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