A.2
B.2.5
C.7
D.10
E.12.5
第2题
A.volumes
B.measurements
C.lengths
D.breadth
第4题
Jim went to great _____ to try to please his girlfriend.
A、bother
B、lengths
C、ways
D、troubles
第5题
A.distances
B.directions
C.measurements
D.lengths
第6题
A、continuous fibers
B、discontinuous fibers
C、short fibers
D、long fibers
第7题
A.gaps
B.lengths
C.distances
D.intervals
第8题
第9题
Two different bond lengths are observed in the PF5molecule,but only one bond length is observed in SF6. Explain the difference.
第10题
第11题
A.indicated
B.conversed
C.fabricated
D.repudiated
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