题目

阅读下面短文，从短文后各题所给四个选项（A、B、C和D）中，选出可以填入空白处的最佳选项。 MichaelGreenberg is a very popular New Yorker. He is not famous in sports or the arts,But people in the streets 1 him,especially those who are 2. Forthose people, he is Gloves Greenberg. How did he get that 3?He looks like any other businessman, wearing a suit and carrying a briefcase (公文箱). But he's 4.His briefcase always has some gloves. In winter,Mr. Greenberg does not 5 likeother New Yorkers, who look at the sidewalk and 6 the street. He looks around at 7.He在图中所示的光学现象中，能用光的直线传播解释的是（ ）A．脚踩的影子B．潜水艇里的观察员用潜望镜观察水面上的情况C．.用放大镜观察物体D．.利用太阳光测凸透镜的焦距