12____4=8
8____8=1
24____4×6
给图片找到对应的音节,再读一读。
____ ① A kě lè
____ ② B dǎ ɡǔ
____③ C bā ɡuà
如图,在四棱锥P﹣ABCD中,PC⊥平面ABCD,AB∥DC,DC⊥AC.
—Would you mind staying in such a noisy room?
—No, but my son needs a _________ place to study in.