A:在细胞质基质中产生丙酮酸
B:有氧呼吸的三个阶段都产生H
C:有氧呼吸第二阶段需要水的参与
D:有氧和无氧条件下都产生二氧化碳
土星绕太阳转一周需要二十九点四六年.____
Look at the ____. It can ride a ____. Its ____ are big and its mouth is ____ too. Its tail is____.