A:《光明日报》
B:《大公报》
C:《挺进报》
D:《中央日报》
使用显微镜时,转动下列哪种结构可以较大幅度的升降镜筒( )
(____)He wants to play baseball.
(____)Tim was so happy because he got a gift.
(____)Why are you wearing a Tshirt?
(____)I am going to the cinema tomorrow.
(____)It's difficult to fly a kite.