试绘制图(a)、(b)、(c)、(d)所示的刚架内力图。 (1)试绘制图(a)所示刚架的内力图。
试绘制图(a)、(b)、(c)、(d)所示的刚架内力图。
(1)试绘制图(a)所示刚架的内力图。
试绘制图(a)、(b)、(c)、(d)所示的刚架内力图。
(1)试绘制图(a)所示刚架的内力图。
第1题
"Do you hear someone knocking at the door?" "Yes, I did. I heard him ______ three times."
A.knocking
B.knocked
C.being knocking
D.knock
第2题
"Do you hear someone knocking at the door?"
"Yes, I did. I heard him ______ three times."
A. knocking
B. knocked
C. being knocking
D. knock
第3题
A.when、knocking
B.when、knock
C.that、knockingD. that、knock
第4题
[A] knocking
[B] knocked
[C] being knocking
[D] knock
第5题
A.knock
B.knocking
C.to knock
D.knocked
第6题
I ______ on the door for ten minutes by now without an answer.
A.was knocking B.am knocking
C.had knocking D.have been knocking
第7题
I ______on the door for ten minutes now without an answer.
A.was knocking
B.am knocking
C.knocking
D.have been knocking
第8题
Who's knocking at the door?
A.Kate.
B.John.
C.Jim.
第9题
— Who is that knocking at the door? —-______must be the milkman.
A.He
B.She
C.It
D.The man
第10题
No sooner had I closed the door than somebody started knocking ______ it.
A.on
B.with
C.to
D.for
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