The Browns have worked here since 2002．How long have the Browns worked here? 题目和参考答案——青夏教育精英家教网—

题目内容

17．The Browns have worked here since 2002．（对划线部分提问）
How long have the Browns worked here？

分析 --布朗一家自从2002年就已经在这工作了．
--布朗一家在这工作多长时间了？

解答答案：How long．考查划线部分提问．句意"--布朗一家自从2002年就已经在这工作了．--布朗一家在这工作多长时间了？"．对since+点时间提问，用how long，表示多长时间，多久．剩下的变为一般疑问句，助动词have提前．答案是How long．

点评对划线部分提问，要根据划线部分内容选择合适的疑问词，剩下的变为一般疑问句．注意区分疑问词的用法．会正确运用一般疑问句用法．

练习册系列答案

衡水示范高中假期伴学出彩方案光明日报出版社系列答案

8．A．Very cool B．Not expensive C．At 8：30 a．m．

5．Most of us probably live without vegetables，but a world without chocolate？Now that would be hard!According to chocolate makers it could happen if we don't act soon．
There are two main causes of the chocolate shortage（短缺）-chocolate's growing popularity and less production of cocoa，the plant from which chocolate is made．With more and more people in India and China loving chocolate，not much can be done about the first cause．
Therefore，the only thing we can do is to increase cocoa production．However，new plant diseases and little rain in Ivory Coast and Ghana，the world's largest producers，have reduced cocoa production by 40percent in the past 10years．What's worse，many cocoa farmers in Africa and other cocoa-producing countries like Indonesia and Venezuela are changing to easier-to-grow crops such as corn or rubber．This way，the farmers can make more money．
To prevent more farmers from changing，researchers at the newly opened International Cocoa Control Centre，in the UK，are trying to create new cocoa plants that are stronger and faster growing．But first they must make sure the new plants are safe to grow．This takes a long time．
First，each new plant is stored at the Control Centre for six months to make sure it is healthy．It is then planted in the Centre's fields，studied and tested for another two years．Only after scientists are certain that they're disease-free，will the plants be sent to farmers in West Africa or wherever else they are needed．
To create new stronger types of cocoa，scientists at the Control Centre are combining（结合）the best parts from different cocoa plants．Though the world is facing a serious chocolate shortage，there is now hope!
53．In which countries has chocolate become more popular in recent years？China and India．
54．How long does it take scientists at the Control Centre to make sure a cocoa plant is safe to grow？30 months．
55．If you are a cocoa farmer in Africa，will you continue to grow cocoa？Why or why not？Yes．Because it's hard for me to live in a world without chocolate．/No．Because I will change to grow easier-to-grow crops to make more money．．

12．There are __________ stars shining in the clear summer sky at night．（　　）

2．-The climbers risk their lives to challenge themselves．
-Yes．They kept on climbing _______ it was raining hard．（　　）

9．My aunt married the right man last month．（同义句转换）
My auntgot marriedto the right man last month．

6．--What did you do last summer vacation？
--_____________．I just stayed at home and read some books I like．（　　）

	A．	I am not sure yet		B．	Not really
	C．	Nothing much		D．	I forgot

2．Your baseball is under the chair．（对划线部分提问）
Whereis your baseball？

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