单项选择题

During the Renaissance, graphs and diagrams ______.

A．were often used to aid scientific researches
B．served as sources of fresh ideas for some scientists
C．could provide scientists with an immense quantity of knowledge
D．were necessary for the expression of creative ideas

<上一题目录下一题>

热门试题

单项选择题

The author's purpose in this passage is to ______.

A．define the economic terms used in discussion of employment
B．criticize the decisions of past administrations during recession years
C．call for the application of positive economic control policies in the year that lie ahead
D．allay current fears about increasing unemployment

单项选择题

In the last paragraph, the author mentions the playful child in order to show ______.

A．that geniuses are fond of playing games, too
B．that geniuses are as creative as most children with a set of interesting toys
C．how geniuses turn ideas into reality in different ways
D．why making different combinations can work wonders