单项选择题

(As is known) to (all), sometimes it is very difficult (to tell) the difference between technical English (from everyday English).

A．As is known
B．all
C．to tell
D．from everyday English
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单项选择题
(Giving the opportunity), this (highly intelligent) child will become (whatever) his parents wish him (to be).
A．Giving the opportunity
B．highly intelligent
C．whatever
D．to be
单项选择题
You ______ me, because I didn't say that.
A．must have misunderstood
B．must understand
C．must be misunderstood
D．had to misunderstand
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