单选题 In the same way, children learning to do all the other things they learn to do without being taught—to walk, run, climb, whistle, ride a bicycle—compare their own performances with that of more skilled people, and slowly make the needed changes.
A. they learn to do
B. with that
C. more skilled
D. the needed changes

【正确答案】 B

【答案解析】[解析] compare sth．with sth．意为“把……和……比较”，所比较的是名词复数形式performances。that为单数，不能指代performances，应改为those。