在探索遗传物质的过程中,赫尔希和蔡斯做了T2噬菌体侵染细菌的实验。下列有关叙述正确的是
Tina, close the door___.Your brother is studying for the exam.( )
clearly
easily
widely
quietly
Linda is___of the three girls, but she is the tallest.( )
young
younger
youngest
the youngest
I know her face____ I can't remember her name.( )
and
but
so
or
Look! The boys are making the model boat by___.( )
himself
themselves
ourselves
yourselves
Please pass me___book on the right.( )
four
fourth
the four
the fourth