A:catch up on
B:keep pace with
C:live up to
D:hold on to
①稳定的缓冲液环境 ②DNA模板 ③合成引物 ④四种脱氧核苷酸 ⑤DNA聚合酶 ⑥DNA解旋酶 ⑦限制性内切酶 ⑧温控设备.
- I really want to join the square dance. Can I learn the dance well?
- Yes, Mom! Nothing is impossible ______ you put your heart into it!
某同学在学习了“声音是什么”以后,总结出以下四点,其中错误的是( )