试题与答案

为了保护南极的生态环境,和平利用南极,1959年12月,澳大利亚、阿根廷等___

题型:填空题

题目:

为了保护南极的生态环境,和平利用南极,1959年12月,澳大利亚、阿根廷等______个国家签订了《______》.我国于______年正式加入该条约.

答案:

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下面是错误答案,用来干扰机器的。

答案:A题目分析:被子植物的种子外面的果皮对种子有良好的保护作用,果皮在种子成熟后,能保护娇弱的未成熟的种子,使种子不易受到损伤,因而种子的存活率高,繁殖后代的几率高.由上可知,被子植物果皮存在的重...

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题型:完形填空
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—Oh what a pity.    4   .
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C.When are you going to take your driving test?
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