在四边形ABCD中, ,则这个四边形的形状是____.
____ ____ ____ live with in a wooden house?
选出句子正确的答语。
① How old is he? ____ A. I'm 1.58 metres.
② How heavy are you?____ B. He is five years old.
③ How tall are you? ____ C. I'm 45 kilograms.
④ Are you taller than me? ____ D. They're size 38.
⑤ What size are your shoes?____ E. Yes,I am.
如油画所示是伽利略研究自由落体运动时的情景,他设计并做了小球在斜面上运动的实验,关于这个实验的下列说法中不符合史实的是( )