【单选题】―――I feel sick,doctor.――____. ―――I'm not sure,but I have got a bad headache.
A.
How long have you been sick?
B.
I'm sorry to hear that.
C.
How are you feeling now?
【简答题】小东家有一件久置的铜器件,其表面有大量“铜绿“.小东找来同伴一起探究它的成分,他们向一支试管中加入少量刮下的“铜绿”粉末,格下图所示实验装置来探究它的成分,回答下列问题.查阅资料知:无水CuSO 4 是白色粉末,遇水会变成蓝色;碳粉是黑色粉末,通常情况下不与酸、碱反应. (1)固定放有“铜绿“的试管时试管口应 ______ . (2)将铜绿分解的产物依次通过无水硫酸铜、澄清石灰水时,他们看到无水硫...
【单选题】听力原文:M: I'm glad I called to check on the time for picking Susan up, otherwise I'd have to wait for a longer time. W: Was the plane delayed again? Q: What does the woman imply? (17)
A.
Susan is late for work again.
B.
Susan has been delayed because of busy air traffic.
C.
Susan is traveling on a plane.
D.
Susan needs to be picked up.
【多选题】作为控制工具的弹性预算( )。
D.
只要量本利数量关系不发生变化,则无需每期重新编制
【多选题】作为控制工具的弹性预算( )。
D.
只要本量利数量关系不发生变化,则无需每期重新编制
【单选题】听力原文:M: I'm not feeling well. I'm seasick. I'm faint now. W: Take this medicine and have a short sleep. You'll soon feel better. Where did the conversation take place?
【多选题】在某些情况下,钢丝绳的弹性会显著降低,若继续使用则是不安全的,弹性降低通常伴随()现象。
C.
由于各部分相互压紧,钢丝之间和绳股之间缺少空隙
【简答题】I should very much like to have gone to that party of theirs,but__________. A.I’m not invited B.I have not been invited C.I was not invited D.I had not been invited