单选题
From birth,nightjar chicks solicit food by walking to the front of an adult bird,reaching up,and（ ）.
Athey peck at its bill
Bpeck at its bill
Cpecking at its bill
Dat its bill they peck
正确答案
答案解析
该题考查平行或一致关系。连词and前是reaching up，因此答案为C，其中“reaching up，and pecking at its bill”是分词短语做状语表示伴随。