单选题:The major point discussed in the passage is

题目内容:
The major point discussed in the passage is A.the importance of developing writing skills
B.the complexities of spelling
C.the correct way of marking compositions
D.the relationship between spelling and the content of a composition

参考答案:
答案解析:

Teachers encourage the use of dictionaries so that .

Teachers encourage the use of dictionaries so that . A.students will be able to

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{MP3:http://wximg.233.com/attached/media/20160802/20160802160045_3575.mp3}听录音,回

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下列实验基本操作正确的是(  )

下列实验基本操作正确的是(  )A.稀释浓硫酸时,将浓硫酸沿着烧杯内壁缓慢地注入水中.并用玻璃棒不断搅动 B.过滤时,漏斗里液体的液面要高于滤纸的边缘 C.用剩

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下列各组中的物质互为同分异构体的是(  )

下列各组中的物质互为同分异构体的是(  )

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有一个l000匝的线圈,在0.4s内穿过它的磁通量从0.02Wb均匀增加到0.09Wb,则线圈中的感应电动势为_____

有一个l000匝的线圈,在0.4s内穿过它的磁通量从0.02Wb均匀增加到0.09Wb,则线圈中的感应电动势为__________V。如果线圈的电阻是10Ω,把

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