A.save
B.obey
C.protect
D.pay for
第1题
Even if you have electricity and water, you still cannot produce hydrogen everywhere.
A.Y
B.N
C.NG
第2题
Even if you have electricity and water, you still cannot produce hydrogen everywhere.
A.Y
B.N
C.NG
第3题
A.once
B.even if
C.as though
D.since
第4题
A.except
B.even
C.however
D.unless
第5题
A.Y
B.N
C.NG
第6题
A.except
B.even
C.however
D.unless
第7题
A.Y
B.N
C.NG
第8题
A.except
B.even
C.however
D.unless
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