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（1）（﹣7）﹣2=（ ）； （2）（﹣8）﹣（﹣8）=（ ）； （3） 0﹣（﹣5）=（ ）； （4）（﹣9）﹣（+4）=（ ）．
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举一反三
【单选题】Though Michael had made enough academic preparations, _____ experience led to his failure in the job interview.
A.
lacking
B.
lacking of
C.
lack
D.
lacked
【单选题】His failure made his father think him a ___________ boy.
A.
disappoint
B.
disappointed
C.
disappointing
D.
disappointment
【单选题】His failure was not made public to prevent his look from being seen.
A.
embarrassing
B.
pleased
C.
embarrassed
D.
pleasing
【简答题】供应链管理的英文简写为：()。 A.SST B.SC C.SCM D.CIMS
【单选题】His failure made him aware ___ he had made a great mistake in working out the plan.
A.
of that
B.
of
C.
that
D.
that of
【简答题】乌梢蛇的鉴别特征有( )。A.全体绿黑或黑褐色B.背鳞行数为奇数 C.背鳞2~4强烈起棱,形成纵贯全身的黑线D.具“剑脊”E.具较大的1对毒牙A. 1 B. 1 C. 1 D. 1 E. 1
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