A:which
B:what
C:that
D:that what
读拼音,写词语。
dào dá
chéng xiàng
kǒng pà
yuán dàn
____
tú bù
suǒ xìng
dū chéng
fǒu zé
某兴趣小组利用下列装置进行实验室制取和收集气体的实验,请回答: