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举一反三
【单选题】--- He looks so tired. What’s wrong? --- Nothing serious. He just stayed up last night, ___________his papers.
A.
to prepare
B.
having prepared
C.
prepared
D.
preparing
【简答题】Laura opened the envelope, (fold)______ the letter and began to read it carefully.
【单选题】在PartitionsMagic中对硬分区操作后,如果不满意按快捷键()则使前面的操作失效,回到未操作之前的状态
A.
ALT+D
B.
shift+D
C.
Ctrl+D
D.
ALT+Shift+D
【单选题】车削螺纹时,产生螺距误差、影响误差大小的主要因素是...............( )
A.
主轴回转精度
B.
导轨误差
C.
传动链误差
D.
测量误差
【单选题】He ___be over forty years old. He looks so young.
A.
may not
B.
must not
C.
can not
D.
needn't
【单选题】He ________ be more than thirty------ he looks so young, just like a ager!
A.
can’t
B.
mustn’t
C.
shouldn’t
D.
may not
【单选题】—Please keep it secret between you and me. —He's ______ known the truth because he looks so unhappy. [     ]
A.
possibly
B.
probably
C.
fairly
D.
very much
【单选题】Always read the________on the bottle carefully
A.
35.Always read the________on the bottle carefully andtake the right amout of medieine.  ( 福建 ) A.explanations      
B.
instructions          
C.
descriptions       
D.
introductions
【单选题】Professor Smith promised to look()my paper, that is, to read it carefully before the defense.
A.
after
B.
over
C.
into
【单选题】-Why do you like him? -________ he looks so serious. [     ]
A.
So
B.
Because
C.
When
D.
How
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