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【单选题】
专用于鉴别二氢黄酮类化合物的反应是( )A.
三氯化铁反应
B.
四氢硼钠反应
C.
莫立许反应
D.
锶盐反应
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【单选题】Can you see that girl? She's _________________. [ ]
A.
my mother friend
B.
friends of my mother
C.
a friend to my mother
D.
a friend of my mother's
【简答题】听录音，给下列句子排序。 ( ) This is my eraser. It's a fish. ( ) Is she in the bedroom? ( ) You can see a bedroom, a living room and a kitchen. ( ) My books are on the shelf. ( ) Look! She's h...
【简答题】（ ）是长期储存在计算机内的、有组织的、可共享的数据集合。
【简答题】选出你所听到的句子。 ( ) 1. A. She's in the study. B. She's in the kitchen. ( ) 2. A. You can see a bedroom. B. You can see a bathroom. ( ) 3. A. Is it in your desk? B. Is it in your hand?
【单选题】___that she’s by law old enough to get married, I don’t see how you can stop her.
A.
Having seen
B.
To see
C.
Seeing
D.
Seen
【简答题】数据库就是长期储存在计算机内___、___的数据集合。
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