The building of an ecological civilization has entered a critical period, ______ that requires more quality products to meet people’s demand.

(单选题)29.（ ） (单选题)28.（ ） (单选题)27.（ ） (单选题)26.（ ） (单选题)We are all eager to watch the basketball match ______ on tel (单选题)It is believed that if a book is ______, it will surely ____ (单选题)Although all of the apples ______, none of them ______ good. (单选题)You’ll find it ______ great value in helping you find the lo (单选题)The food was divided ______ according to the age and size of (单选题)Magnificent views over the countryside have often ______ peo