I have bought _____ useful reference books _____ I don’t know which one to start with()
A.so many; that
B.so little; that
C.too much; as
D.so few; that
A.so many; that
B.so little; that
C.too much; as
D.so few; that
A. Bell实验室
B. MIT
C. SCANIMATE公司
D. CAESAR公司
B.Whistling and applauding are the only two forms of communication by hearing
C.Handshaking, as well as handstroking, has enabled the blind to communicate by hearing
D.It is possible to communicate intelligently by hearing
B.hearing; hear
C.have heard; hearing
D.hearing; hearing
B.collecting data from parts of the world
C.calculating and analyzing data
D.watching the sky
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