American college students are increasingly with credit card debt and the consequences can be rather serous
A. boosted
B. burdened
C. discharged
D. dominated
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Science and technology have in important ways to the improvement of agricultural production.
A. attached
B. assisted
C. ontributed
D. witnessed
The little girl was so frightened that she just wouldn’t her grip on my arm
A. oosen
B. remove
C. relieve
D. dismiss
A word processor is much better than a typewriter in that it enables you to enter and your text more easily.
A. register
B. edi
C. propose
D. discharge
以下修改xs表结构【xhchar(8),xmchar(8),bjchar(20)】的命令正确的有()。【本题2项正确】
A. altertablexsmodifyxhchar(10)notnull;
B. altertablexsmodifyxhchar(10)notnullafterbj;
C. altertablexsmodifyxh学号char(10)notnullafterbj;
D. altertablexsmodifyxhchar(8)as学号char(10)notnull;