U2 (词汇) Each ______ in the Ice Bucket Challenge helped to raise more money.(nominate)
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U2(中英文匹配)Please mathch the English items with the correct Chinese.
U2 (写作)Match the expresssions below to the correct functions.
A4图纸幅面尺寸是( )
A. 594X841
B. 420X594
C. 297X420
D. 210X297
下列比例当中表示放大比例的是
A. 1:1
B. 1:2
C. 2:1
D. 无