单选题：The most pressing problem any economic system faces is how

题目内容：

The most pressing problem any economic system faces is how to use its scarce resources. A．puzzling
B．difficult
C．terrifying
D．urgent

参考答案：

答案解析：

Before you decide on a vocation, it might be a good idea to

Before you decide on a vocation, it might be a good idea to consult a few good

分类：综合类题型：单选题

请根据短文的内容，回答题。 Balancing a Job with SchoolworkEach semester, Andrew Tom receives

分类：综合类题型：单选题

Good leaders always avoid __________.A．the ability to work with others B．encoura

分类：综合类题型：单选题

When an ordinary computer mouse gets dirty, it has to be replaced with a new on

分类：综合类题型：单选题

Mr. Henley has accelerated his sale of shares over the past year.A．held B．incre

分类：综合类题型：单选题