Nowadays, many countries are looking for ____ (renewable/renew) energy to protect the environment.
按拼音写汉字
huā luò
chéng yīn
ér tóng
jí zǒu
huáng dié
cài huā
____
下列实验操作的图示正确的是( )
I'm_______ugly duckling.( )
下列关于人体内激素、腺体的叙述错误的是( )