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现在完成式 与过去进行式当我在和别人说话(at time of speaking)的时候,我可以使用:1)" I had done the work"I said laboriously.or2)" I have done the work"I said aboriously.请问以上的哪一个对啊?如果你选那个答案 探究唾液对馒头的消化作用实验中,变量是? 唾液对馒头的消化 目的是什么 If there are 18 boys and 12 girls in a class,what percent of the class is girls? this thing will make you can't download.Your sincerely. what are you people是什么意思不要机器翻译!要有语法根据!详细点,不然不给分.谢谢 求一篇初一中段考的小结300-500字 求一篇初二上学期水平中段考总结,（是日记）求一篇初二中段考总结,答的好我在挥泪追加!从班级第23掉到29） 400到700字之间 中段考总结作文三科，半小时50分 馒头中的蛋白质能被唾液消化吗? 刮台风银行里有上班吗? The__(lead)is very strict with us.怎么填?用适当形式 无水碳酸钠在工业上有什么用途?如题, Milk is said to be the best of all foods because is has __1_of thethings--fat,suger and others that the ____2____ needs.Peoole use milk to ___3___ many different foods—cakes,sweets ,yogurt and so ____4____.Many British and American people like to d 下列物质可与Na2CO3、K2SO4、AgNO3归属于同一类物质的物质是：A CaCO3 B 食盐水 C BaCl2 D Na2SO4, 国家为什么要垄断食盐? We are single is not because we are the left,but because we are the best! 露天矿收方,原始地形测量. 用免棱镜的全站仪可以直接一个人测量露天矿的开挖地形吗?必须用棱镜5-10米的跑尺啊?如果高差大,跑不到呢? in the meeting 还是at the meeting It is not a lack of love,but a lack of friendship that makes unhappy marriages.”请翻译以上话,并写出句法结构,主语,宾语,补语等. s____:broad open place at the meeting of streets i'm never in any of the meeting这句话有疑问这句话的意思是：我从来没有会.为什么会用in any,不懂啊 You are the beauteous of meeting in my life.什么意思 寻租行为存在的前提是必须有垄断的存在这句话是正确的吗 邓稼先、袁隆平的资料 简介略写 对祖国的贡献详写 不许复制 袁隆平和邓稼先的事迹 邓稼先和袁隆平能举世瞩目的原因是什么 在会上,用英语怎么说?A at meeting B at the meeting C in the meeting D in meeting 《手机》里那个铃声是“you have 什么call”? an optimum run rate while meeting the quality criteria of outThe modules need to be visually inspected via a stereo microscope.Recommended zoom level is 64 although Motorola would consider Samsung recommendation to keep the production at an optimum r top在车中是什么意思