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【简答题】
如图是常用钉书钉和钉书机，它在结构和使用上应用了不少的物理知识，根据图示和你对钉书机的认识，写出钉书机在哪些地方应用了压强的知识． （1）钉书机的底座安在橡皮垫，可以增大______，减小______． （2）钉书针做的尖细，可以______．
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举一反三
【单选题】听力原文：M: Oh, my God! Jessica. It's five p. m. now. Tomorrow is Saturday. The credit will expire on Sunday. Weekend is non-business day. We cannot make it today. What shall we do? W: Don't worry. Banks ...
A.
On every business day.
B.
On Tuesday.
C.
On Wednesday.
D.
On the following business day.
【单选题】— Tomorrow is Saturday, why don’t we play basketball in the gym? —Good idea, ________ I have to see my grandparents.
A.
so
B.
or
C.
but
D.
and
【单选题】下列对周围神经有髓神经纤维的叙述，正确的是
A.
一个少突胶质细胞包裹一段轴突或树突
B.
轴膜存在着神经胶质细胞不包裹的裸露区域，称为郎飞结
C.
髓鞘是轴突周围的结缔组织成分
D.
髓鞘的化学成分主要是粗面内质网
【简答题】Tomorrow is Saturday.(变成一般疑问句)
【单选题】Tomorrow is Saturday. We _________ to school. [ ]
A.
will go
B.
won't go
C.
can go
D.
went
【单选题】Tomorrow is Saturday. Don’t ______ early! He wants to sleep more.
A.
wake up him
B.
wakes him up
C.
wake him up
D.
wakes up him
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