炼制蜂蜜时，老蜜的相对密度为（）
A.1.25
B.1.30
C.1.34
D.1.37
E.1.40
参考答案：E
The children talked so loudly at dinner table I had to struggle _________.
A．to be heard
B．to have heard
C．hearing
D．being heard
(2012·江西高考)We ________ have bought so much food now that Suzie won't be with us for dinner.
A．may not
B．needn't
C．can't
D．mustn't
