A.is about 25%
B.is about 50%
C.is about 75%
第1题
A.Red and green
B.if mixing
C.in
D.will give
第2题
A.White and black
B.if mixing
C.in
D.will show
第5题
(22)
A.The departure gate was 29t3 and is now 30F.
B.The departure gate was 30A and is now 32B
C.The departure gate was 32A and is now 29F.
D.The departure gate was 29F and is now 30B
第6题
B、to turn
C、turn
D、be turned
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