Look at this desk. It's Jim's desk. It's brown. Jim's book is on it. The book is his English book. His pencil-box is on it, too. His pencil is in his pencil-box. But where's his pen? He can't find(找到) it.
将下列细菌或真菌与其用途用线连接起来。
①乳酸菌
____
a制作馒头和面包
②甲烷菌
b制作泡菜和酸奶
③酵母菌
c分解秸秆,产生甲烷
④青霉
d产生青霉素等抗生素
鹅的步调从容,大模____大样,颇像京剧里的净角____出场。
《马关条约》规定开放的通商口岸有沙市、重庆、苏州和汉口。
错误:____ 改正:____