①____ A.meet B.feet
②____ A.see B.tea
③____ A.bed B.three
④____ A.read B.bread
⑤____ A.feed B.kite
⑥____ A.beef B.eat
保护生物多样性最为有效的措施是( )
Is your birthday on June 4th?
____
下列生物中能产生抗生素的是( )