If a photographer wanted to take pictures of moving things in the year of 1840, he had to______.
A. watch lots of films
B. buy an expensive camera
C. stop in most cities
D. take with him other machines apart from film
正确答案：D
38．答案为D从第三段可知当时的摄影师必须携带大量胶卷和设备才能拍片因此选D
