题目内容

A．as justB．just asC．becauseD．while

A. as just
B. just as
C. because
D. while

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设a，b，c为实数，且|a|-a＝0，|ab|＝ab，[c|+c＝0，则|3b|- |a+b|-|c-b|+|a-c|＝()．

A. 0
B. ．-b
C. b
D. d

A．embodiedB．enrichedC．implantedD．included

A. embodied
B. enriched
C. implanted
D. included

A．aboutB．onC．underneathD．within

A. about
B. on
C. underneath
D. within

A．fromB．inC．/D．for

A. from
B. in
C. /
D. for