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【单选题】
If you want to use your Business Telecard International, you have to______.A.
use a card phone
B.
phone on Sunday
C.
make a direct dialing call
D.
pay extra
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举一反三
【简答题】It's not exactly clear where the refuge is. It's not even clear if the miners are alive. And it's not even clear who's ______.
【简答题】食品细菌包括（）、（）和非致病菌，这些细菌往往与食品出现特异颜色、气味、荧光、磷光以及致病性有关。
【单选题】In all of American history, immigrants who have come to the U.S. are not ______.
A.
for political reasons
B.
for religious reasons
C.
for economic reasons
D.
for belief reasons
【单选题】Mary's bedroom is clean and clear, while her brother's bedroom is always ______.
A.
at six and seven
B.
at sixes and sevens
C.
at sixth and seventh
D.
at sixths and sevenths
【简答题】CTCS2-200H型车载列控系统VC采用什么硬件结构？
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