【单选题】【消耗次数:1】
I haven’t finished my composition . I ________ for two hours and a half.
have written it
have been writing it
wrote it
am writing it
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相关题目
【单选题】 I haven’t finished my composition . I________ for two hours and a half.
①  have written it
②  have been writing it
③  wrote it
④  am writing it
【单选题】 I haven’t finished my composition. I ___ for two hours and a half.
①  ?have written it
②  ?have been writing it
③  ?wrote it
④  am writing it
【单选题】 I often ______ the cooking for my family, but recently I have been too busy to do it.
①  will do
②  do
③  am doing
④  had done
【单选题】 I have been looking forward to ____ from my parents.
①  :hear
②  :being heard
③  :be heard
④  :hearing
【单选题】 ( ) he finished writing the composition in such a short time surprised us all.
①  What
②  How
③  That
④  If
【单选题】 I am ____ grateful for the many kindnesses you have shown my son.
①  excessively
②  much
③  certainly
④  exceedingly
【判断题】 I have finished the book.
①  正确
②  错误
【单选题】 I have_______ finished the homework.
①  yet
②  already
③  still
【单选题】 The reason _________ I am writing this letter is to tell you about the meeting on Saturday.
①  because
②  why
③  for
④  as
【单选题】 I haven’t read ____ of his books, but judging from the one I have read I think he’s a very promising writer.
①  any
②  none
③  both
④  either
随机题目
【多选题】 花生缺素症包括()
①  A缺氮
②  B缺磷
③  C缺钾
④  D缺铁
⑤  E缺钙
【多选题】 种公羊配合饲料参考配方为()
①  A玉米60%
②  B豆粕15%
③  C玉米胚芽粕9%
④  D麸皮10%
⑤  E石粉5%
⑥  F预混粉1%
【多选题】 羊最常见的寄生虫有()
①  A肝片吸虫
②  B绦虫
③  C捻转胃虫
④  D积节虫
⑤  E鞭虫
【多选题】 昆虫头部具有主要的感觉器官如触角、复眼和单眼,还有取食的口器,所以头部是昆虫的()中心。
①  A感觉
②  B取食
③  C生殖
④  D运动
⑤  E感受
【多选题】 秸秆(如麦秸、稻草、玉米杆等)为什么不能随便烧掉?()
①  A.污染大气环境
②  B.引发火灾
③  C.焚烧秸秆形成的烟雾,影响交通和航空安全
④  D.破坏土壤,造成耕地质量下降
【多选题】 农作物秸秆是粮食作物和经济作物生产中的副产物,它含有丰富的()等微量元素,是一种可供开发与综合利用的资源。
①  A.氮
②  B.钾
③  C.铁
④  D.磷
【多选题】 以下颗粒有机物的残体不易被土壤微生物腐蚀的()。
①  A.幼嫩的草木犀
②  B.玉米秸秆
③  C.麦草
④  D.锯末
【多选题】 植物源农药一般分为()。
①  A.生物碱类
②  B.光活化毒素类
③  C.萜烯类
④  D.精油类
⑤  E.黄酮类
【多选题】 关于山羊绒下列说法正确的是()。
①  A.纤细、柔软保暖,羊绒是动物纤维中最细的一种之一
②  B.羊绒的吸湿性比羊毛好
③  C.色泽自然柔和,羊绒纤维细度均匀
④  D.羊绒就是细羊毛,因为纤维细,所以手感比羊毛好
【多选题】 绒山羊的特点有()。
①  A.产绒量高
②  B.遗传性能稳定
③  C.适应性强
④  D.改良低产绒山羊效果显著