在现实生活中,下列属于对社会的冷漠情绪和“看客”心态的是( )
A:看到公共场所乱扔的垃圾熟视无睹
B:在大街上过马路闯红灯、不走斑马线
C:在公园里随意践踏草坪
D:在公共场所旁若无人地吸烟、讲话、乱扔瓜皮果壳
使用显微镜时,对光完成的标志是看到明亮的圆形视野.(判断对错)
如图所示,用不等式表示零件长度的合格尺寸的取值范围是____
(____)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.