【单选题】Claisen缩合反应经常用于制备下列哪一类化合物:
【单选题】Customer: Isn't the pink blouse pretty? Salesgirl: ______
A.
Yeah...but the blue one would look better on you.
B.
No,the blue one is prettier.
D.
I don't think I agree with you.
【判断题】混频器与其他频率变换电路一样,必须具有非线性器件。
【简答题】阅读短文,判断句子对(√)错(×)。 Shopping Salesgirl: Can I help you? Joe: Six apples, please. How much? Salesgirl: Four yuan. Robin: What are these? Salesgirl: They are watermelons. How many do you want? Robin: Onl...
【单选题】Salesgirl:______ Customer: No. I'd like a long-sleeved shirt in yellow, medium. Salesgirl: I think we're out of your size. Customer: Well, can you get me one? Salesgirl: I think so. Check back next we...
B.
Is somebody taking care of you?
C.
What are you looking for?
【多选题】根据行为的表现形式不同,可以将法律行为分为( )。