The bookshop was on the brink of failure until they ___________into CDs and cassettes. A: developed B: advanced C: prompted D: branched out

Designers<br/>have ( ) out from clothes to cosmetics. A: come B: gone C: branched D: tap

His attention often______at lectures. No wonder he failed the exam. A: branched B: wondered C: wandered D: went out

Starch is a soft, white, tasteless powder that is insoluble in cold water, alcohol, or other solvents. The basic chemical formula of the starch molecule is (C6H10O5)n. Starch is a polysaccharide comprising glucose monomers joined in _________ linkages. The simplest form of starch is the linear polymer amylose; amylopectin is the branched form.