The discovery of the halftone process in photography in 1881 made it -考呗网题库移动版

单选题 The discovery of the halftone process in photography in 1881 made it __________ photographs in books and news-papers.

A．the possible reproduction
B．possible to reproduce
C．the possibility of reproducing
D．possibly reproduced

参考答案B

解析:

单选题 The face of the Moon is changed by collisions with meteoroids, ____________________ new craters to appear.

A．cause
B．causing
C．caused
D．have caused

单选题 Professor King's book will show you ___________ can be used in other context.

A．that you have observed
B．that how you have observed
C．how that you have observed
D．how what you have observed

单选题 In the experiment we kept a watchful eye __________ the developments and recorded every detail.

A．in
B．at
C．for
D．on