摘要: 用在江河湖海.山脉.群岛.海峡.沙漠等地理名词前.
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阅读下面一段文字,找出“碳链式反应”过程的三个关键性词语。
科学家在喀斯特地貌的研究中,发现了一个复杂的碳链式反应。当水流从空气中“大口吮吸”二氧化碳并侵蚀石灰岩时,持续不断的吸碳过程就开始了。接着,在岩石表面自由流淌的酸性水流携带着大量碳酸氢根,随着自然界的水循环转辗奔向江河湖海。此时,浮游植物体内的“食物加工厂”在急切地“找米下锅”,它们惊喜地发现,只要分泌一种叫做“碳酸酐酶”的催化剂,对水中的碳酸氢根“略施魔法”,等待加工的“米”——二氧化碳,就唾手可得。最终,光合作用将大量随波逐流的碳转化成有机碳,封存与水生植物体内。
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完成句子。
阅读下列各小题,根据每句后的汉语提示,用句末括号内的英语单词完成句子.
1.Not only____________________languages but also at history and geography.(good)
他不仅擅长语言,并且历史和地理也很好.
2.Not once____________________a jump in the horse riding competition. (miss)
马术比赛中她从来没有错过一个障碍物.
3.Little____________________that she had already left. I had intended to treat her to a dinner.
(know)
对于她已离开我毫不知情.我原打算请她吃晚餐的.
4.No sooner____________________the station than she rushed towards the car that Peter took.
(arrive)
火车一到站,她就朝彼得开来的车跑去.
5.If he ____________________ advice, he wouldn't have lost his job.(take)
如果他采纳了建议,就不会丢掉工作了.
6.So____________________that I couldn't see the faces of people that were only three meters away.(dark)
天太黑了,以至于我连三米以外的人的脸都看不见.
7.Away____________________when he made a little noise in the grass.(fly)
他在草地上发出一点声音,鸟儿都飞走了.
8.Mr Johnson insisted that the problem worthy of attention____________________at the meeting.
(discuss)
约翰逊先生坚持要在会议上讨论这个值得注意的问题.
9.Tom is very easygoing and friendly; he is not ______________.(fear)
汤姆很随和、友善,他不应该被惧怕.
10.The lake is safe ____________________;it is not deep and the bottom is flat.(swim)
在这个湖里游泳很安全;它不深,湖底也很平坦.
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1.Not only____________________languages but also at history and geography.(good)
他不仅擅长语言,并且历史和地理也很好.
2.Not once____________________a jump in the horse riding competition. (miss)
马术比赛中她从来没有错过一个障碍物.
3.Little____________________that she had already left. I had intended to treat her to a dinner.
(know)
对于她已离开我毫不知情.我原打算请她吃晚餐的.
4.No sooner____________________the station than she rushed towards the car that Peter took.
(arrive)
火车一到站,她就朝彼得开来的车跑去.
5.If he ____________________ advice, he wouldn't have lost his job.(take)
如果他采纳了建议,就不会丢掉工作了.
6.So____________________that I couldn't see the faces of people that were only three meters away.(dark)
天太黑了,以至于我连三米以外的人的脸都看不见.
7.Away____________________when he made a little noise in the grass.(fly)
他在草地上发出一点声音,鸟儿都飞走了.
8.Mr Johnson insisted that the problem worthy of attention____________________at the meeting.
(discuss)
约翰逊先生坚持要在会议上讨论这个值得注意的问题.
9.Tom is very easygoing and friendly; he is not ______________.(fear)
汤姆很随和、友善,他不应该被惧怕.
10.The lake is safe ____________________;it is not deep and the bottom is flat.(swim)
在这个湖里游泳很安全;它不深,湖底也很平坦.
书面表达
假如你是王海,上周你班就中学生使用手机的现象展开了讨论,同学们各抒己见。请你
给英语报社的编辑写一封信谈谈自己的看法,提示如下:
1.手机带来的好处(便于联系同学、朋友及家人);
2.使用手机带来的问题(上课玩手机,影响学习;聊天、发短信,占用了学习时间,
增加了经济负担);
3.建议把精力用在学习上。
注意:词数120~150。
Dear editor,
______________________________________________________________________________
______________________________________________________________________________
Yours truly,
Wang Hai
查看习题详情和答案>>
假如你是王海,上周你班就中学生使用手机的现象展开了讨论,同学们各抒己见。请你
给英语报社的编辑写一封信谈谈自己的看法,提示如下:
1.手机带来的好处(便于联系同学、朋友及家人);
2.使用手机带来的问题(上课玩手机,影响学习;聊天、发短信,占用了学习时间,
增加了经济负担);
3.建议把精力用在学习上。
注意:词数120~150。
Dear editor,
______________________________________________________________________________
______________________________________________________________________________
Yours truly,
Wang Hai