题目内容

Jane is one of the best students in her class who _______ by their teacher.

A. are praised
B. is praised
C. praised
D. praises

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Here ______ a pen, a few pencil and some paper for you.

A. are
B. is
C. was
D. were

将下列十进制数转换为二进制数、八进制数、十六进制数。25=（）2=（）8=（）16；43=（）2=（）8=（）16；56=（）2=（）8=（）16；78=（）2=（）8=（）16。

将下列二进制数转换为十进制数。10110001=；10101010=；11110001=；10001000=。

将下列十六进制数转换为十进制数。FF=；3FF=；AB=；13FF=。