看拼音,写汉字。
qīng róu xùn sù jiāo kě xǐ chū wàng wài
____ ____ ____ ____
fán nǎo yǎn gài tuò mo zuǒ gù yòu pàn
科学家在对黄化豌豆幼苗切段的实验研究中发现,切段内一定浓度的生长素会促进细胞的伸长,当生长素浓度达到一定值后就会促进乙烯的合成,而乙烯含量的增高,反过来又抑制了生长素促进切段细胞的伸长作用。以下观点符合上述例子的是( )
I have a big family. My name is Tony Brown. I'm English. My father and mother are teachers. They teach (教) English in No.1 Middle School. I have a sister. Her name is Mona. We are students in N0.1 Middle School. My grandfather's name is David, My grandmother's name is Sue. They are retired (退休的), they are at home. Paul is my uncle. He is a worker (工人). Paul's wife (妻子)—Jane, is a doctor (医生). They have a son. His name is Jeff. He's only three.