题目内容
(请给出正确答案)
[单选题]
It was ______ that we felt tired when we arrived.
A.a so long travel
B.such a long travel
C.such a long journey
D.a so long journey
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A.a so long travel
B.such a long travel
C.such a long journey
D.a so long journey
A.W矿=0.40d12+0.05d13
B.W矿=0.35d12+0.15d13
C.W矿=0.43d12+0.02d13
D.W矿=0.39d12+0.07d13