【单选题】【消耗次数:1】
Ive lost my pen. I cant find it anywhere, so I have to buy ____ after school.
it
one
this
that
参考答案:
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相关题目
【单选题】 —I want to have my CD player fixed, but I cant find a repair shop. —Oh, I know_____ . Come on, Ill take you there.
①  one
②  the one
③  ones
④  many
【单选题】 I have lost my white hat. I______ it somewhere.
①  must be dropping
②  must have dropped
③  must have been dropped
④  must drop
【单选题】 She said she __________ lost a pen.
①  have
②  has
③  had
④  having
【单选题】 Where is my pen? I________it.
①  might lose
②  would have lost
③  should have lost
④  must have lost
【单选题】 I have the same pen ______.
①  which you have
②  as yours
③  that you are
④  as you
【单选题】 I have _________ some courses and software to my Smartphone, and I find they are very interesting and easy to use.
①  uploaded
②  downloaded
③  copied
④  copy
【单选题】 13. Where is my pen? I ______ it.
①  might lose
②  would have lost
③  should have lost
④  must have lost
【判断题】 A: I have lunch in the restaurant. B: So have I
①  正确
②  错误
【单选题】 I am so tired that I spend one day _______.
①  to sleep
②  sleeping
③  sleeps
【单选题】 This book has been in the works so long that I have lost _____of most of the sources found for me by the staff of the library.
①  trace
②  trail
③  track
④  touch
随机题目
【单选题】 非异常维管束所形成的性状特征是
①  车轮纹
②  罗盘纹
③  云锦花纹
④  星点
【单选题】 中药气调养护法的主要目的是
①  充氮
②  充二氧化碳
③  充氧
④  降氧
【单选题】 一般药材取样量
①  25g
②  100~500g
③  5—10g
④  50g
【判断题】 吸附色谱法分离生物碱常用的吸附剂是硅胶
①  正确
②  错误
【判断题】 水溶性生物碱分离的常用方法是雷氏盐沉淀法
①  正确
②  错误
【判断题】 生物碱的薄层色谱和纸色谱法常用的显色剂是改良碘化铋钾
①  正确
②  错误
【判断题】 碱性不同生物碱混合物的分离可选用pH梯度萃取法
①  正确
②  错误
【判断题】 碱性较强的生物碱在植物体内的存在形式多为无机酸盐
①  正确
②  错误
【多选题】 用乙醇提取生物碱可提出
①  游离生物碱
②  生物碱无机酸盐
③  生物碱有机酸盐
④  季铵型生物碱
⑤  两性生物碱
【多选题】 常用于检识生物碱的试剂是
①  碘化铋钾试剂
②  醋酸镁试剂
③  碘化汞钾试剂
④  雷氏盐试剂
⑤  苦味酸试剂