开放式基金的认购费用不得超过（）。 A.3% B.2.5% C.10% D.5%

对象串行化中，要被串行化的对象所属类的接口是【 】。

阅读理解。

     Bamboo is a giant grass that grows in warm places. It has many uses. Everything-from chairs and

fishing rods to basket and paper can be made from it. And that's not all. It can be eaten, too. People in

China like bamboo shoots very much. They think the bamboo shoots are a delicious vegetable for parties

and meals.

     In many parts of Asia, bamboo shoots are a favorite food. The winter shoots are the best because

they are soft, with a white and green color. Usually they are boiled in water with some salt. Spring shoots

are darker and harder, so they take longer to cook. But they are cheaper than winter shoots.

     Fresh bamboo shoots are seldom found outside bamboos' hometown. But people in other places can

buy bamboo shoots, too. These shoots are kept in bottles and cans. They need no cooking and are almost

as good as fresh bamboo shoots.

1. Winter shoots            . [ ]

A. taste better

B. have a lighter color

C. take less time to cook

D. all of the above

2. Fresh bamboo shoots are easily found in            . [ ]

A. Asia

B. Europe

C. America

D. Australia

3. Bamboo shoots kept in cans             .[ ]

A. need no cooking before eat

B. are sweet

C. can be made into chairs and tables

D. are used to make rope

过滤槽的安装，槽底与筛板可以略倾斜。

孟郊的《烈女操》中写道：“梧桐相待老，鸳鸯会双死。”此“梧桐”为雌雄同株，以死相从之意，请问雌雄两树分别指什么？

账务系统的特点之一是遵循世界通用的复式记账原则，即：有借必有贷、借贷必相等，资产=负债+所有者权益，利润=收入-费用。( )