【判断题】台阶主要用于解决由于建筑物室内外高差形成的出入问题
【判断题】在同一平面图上,可以有三条不同的等产量线。()
【判断题】肾小球毛细血管内的血浆胶体渗透压上升的速度和肾血浆流量成正比。
【单选题】Terry was so tired that he couldn't walk______.
【单选题】Terry was so tired that he couldn’t walk ________.
【单选题】The author says Johnson found it difficult to walk because______.
A.
he couldn't control his legs
B.
he generally wore irons round his legs
C.
people always stared at him
D.
it hurt his friends to watch him