题目

用方框中所给单词的适当形式填空。每词限用一次。 culture, collect, polite, twenty, valuable 1． To behave _________ at a dinner party, we should learn some basic manners. 2． Lily likes _________ lovely dolls and now she has 30 different dolls in total. 3． The computer was invented in the early _________ century and became the greatest invention. 4． Robin has been to China several times and now he knows much _________ of the country. 5． The young mother takes many photos of her baby’s daily activities so that these _________ moments can be kept forever.我国气候复杂多样的重要标志是（　　）A.有多种多样的温度带和干湿地区B.东南季风和西南季风都影响我国C.地形复杂，使气候多样D.有多种灾害性天气