经营杠杆是通过扩大销售来影响税前利润的，它可以用边际贡献除以税前利润来计算，它说明了销售额变动引起税前

(调查表明)____________that the students spend much more time listening to English than they do on speaking it.

The ability and aptitude tests indicate that top scorers

A．are more likely to do a good job.

B．do not necessarily mean good performance in work.

C．are always reliable.

know how to make the most of one's abilities.

dents nowadays spend more time surfing on the Internet and watching movies on DVD's. Naturally they spend less time reading books. Do you think that students today are less knowledgeable because they read fewer books？

Top Students1. Most people have the potential to be top students even with average intelligence.

2. Generally speaking, top students have systematic and effective studying skills.

3. There is no doubt that almost everybody could become a top student if he or she sensibly follows a good plan.

rite it neatly on ANSWER SHEET(2).

Quite a few teachers complain about students reading fewer books than before. In fact, students nowadays spend more time surfing on the internet and watching movies on DVD's. Naturally they spend less time reading books. Do you think that students today are less knowledgeable because they read fewer books？

Spend Their Summer Vacations？ You should write at least 120 words according to the outline given below in Chinese:

1. 过去学生是如何度过暑假的

2. 现在许多学生在暑假期间也非常繁忙

3. 我对此现象的看法

How do Students Spend Their Summer Vacations？

Markets do not necessarily totally on the price of demanded goods.

A．Y

B．N

C．NG

The second paragraph means that _______.

A．only students from China study at the top universities

B．no other students but Japanese and Chinese students study at the top universities

C．Chinese students often fight against Japanese students

D．famous universities in the United States attract more Chinese students