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【简答题】
已知在平行四边形ABCD中，点A（1，1），B（2，3），CD的中点为E（4，1），将?ABCD按向量 a 平移，使C点移到原点O． （1）求向量 a ； （2）求平移后的平行四边形的四个顶点的坐标．
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【简答题】Translate the following sentences into English, using the words and phrases in brackets. 使用括号里的单词或词组,将下列汉语句子翻译成英语。 1 杰克是个如此勤奋的学生,他无论走到哪里身边总是带着本书。(dit)
【简答题】注射成型过程中的压力包括 压力和 压力两种。
【单选题】The white landlord angered the narrator's mother by ________.
A.
driving her children out of school
B.
telling her not to let her children go to school
C.
fighting with her
D.
being rich
【简答题】In the late 1920s my mother ran away from home to marry my father. Marriage, if not running away, was expected of seen-year-old girls. By the time she was twenty, she had two children and was pre...
【单选题】The white landlord angered the narrator's mother by ________ .
A.
a.driving her children out of school
B.
b.telling her not to let her children go to school
C.
c.fighting with her
D.
d.being rich
【简答题】注射成型中的压力包括____和____两种。
【单选题】the white landlord angered the narrator's mother by
A.
driving her children out of school
B.
telling her not to let her children go to school
C.
fighting with her
D.
being rich
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