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【单选题】
设x为整数,[x] 补 =1,x 1 x 2 x 3 x 4 x 5 ,若按x 。A.
x 1 =l,x 2 ～ x 5 任意
B.
x 1 =0,x 2 ～ x 5 至少有一个为1
C.
x 1 =0,x 2 ～ x 5 任意
D.
x 1 =l,x 2 ～ x 5 至少有一个为1
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举一反三
【单选题】When I heard his humorous words, I couldn't help _____.
A.
trembling
B.
laugh
C.
tremble
D.
laughing
【单选题】When the youngsters heard the news, they ______.
A.
couldn't believe it
B.
realized their dream had come true
C.
became mad with joy
D.
rushed to the choir room