The frequent ______ from cold to warm weather this spring have caused much illness.A.trans
公共英语
已帮助 人
The frequent ______ from cold to warm weather this spring have caused much illness.
A.transmissions
B.transactions
C.transformations
D.transitions
-
正确答案:D
解析:(transition过渡)。句意为:今年春天时冷时暖引发多种疾病。A.transmission传染;B.transaction交易;C.transformation转变,转换。
