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【单选题】
I often go shopping _____ Sunday.A.
on
B.
at
C.
in
D.
under
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【单选题】When spring comes, the trees are ______.
A.
in a flower
B.
in flowers
C.
in the flower
D.
in flower
【简答题】Ces conés (bénéficier) d’une liberté conditionnelle avant qu'un mois ne s'écoule.
【简答题】The writer found it hard to quit smoking because
【单选题】According to the writer, the secret toperfect memory
A.
has been found．
B.
will never be found．
C.
was found a long time ago．
D.
is not in sight yet．
【单选题】The writer states that fungi and bacteria_____.
A.
are only found below the normal altitude of jet planes
B.
have been found well at the normal altitude of jet planes
C.
are not found below the surface of the earth
D.
are mainly found below the surface of the earth
【多选题】下列关于工程图样中图线的描述,正确的是:
A.
机械图样中采用粗、细两种线宽，它们之间的比例为2:1。
B.
同一张图样中，相同线型的宽度可以不一致。
C.
可见棱边线应画成粗实线。
D.
轴线应画成细实线。
E.
断裂处的边界线采用细实线绘制。
F.
不可见轮廓线采用细虚线绘制。
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