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【单选题】
机械波的表达式为 ,式中 y 和 x 的单位为 m , t 的单位为 s ,则( )A.
波沿 x 正方向传播
B.
周期为 0 . 5 s
C.
波速为 10 m/s
D.
波长为 5 m
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【单选题】If you want to visit Taiwan this month, you have to ( ).
A.
visit their office on Saturday
B.
phone the number 6459-9561
C.
turn to some other travel agencies
D.
pay more to cover the same tour
【简答题】Have you ever been to Taiwan, China’s biggest island? Do you want to pay a visit there? We’ll show you the best of Taiwan island. A four-day tour. Price Only ￥5,000 Including: Round – trip plane t...
【单选题】— Have you ever been to Taiwan, Jim? — No. But I know it's _____ island. It's in the southeast of China. [ ]
A.
a
B.
an
C.
the
【简答题】日本大学院设有博士前课程及( )课程,博士前课程又称为( )课程。
【单选题】－Have you heard of Liu Qian from Taiwan? －Sure! His magic performance is _______amazing for people ______forget．
A.
so; that
B.
such; that
C.
too; to
D.
very, to
【简答题】阅读理解。 Have you ever been to Taiwan, China's biggest island? Do you want to pay a visit there? We'll show you the best of Taiwan island. A four-day tour. Price Only ￥5,000 Including: Round-trip plane t...
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