A hobby is not a job or a school subject. A hobby is something you enjoy doing in your spare time. It’s not something you need to do. It’s just fun. Some people make model ships, keep pets, plant flowers, play computer games or chat on the Internet. Some paint pictures or dance to music. Some collect everything from stamps to seashells (海贝壳)…．People take up hobbies because they think these activities can bring them many things like happiness, friendship and knowledge. Anyone, rich or poor, old or young, sick or well, can have a hobby. A hobby will make your life colorful.

小题1:What is a hobby?

A．A job.

B．A school subject.

C．Something interesting.

D．Something you enjoy doing in your spare time.小题2:.How many hobbies are mentioned(提到) in this passage?

A．7.

B．8.

C．9.

D．10.小题3:Hobbies can bring people _______.

A．much money

B．health

C．happiness, friendship and knowledge

D．lots of trouble小题4:What kind of people can have a hobby?

A. Rich or poor.       B. Old or young.       C. Sick or well.       D. A、B and C.

小题5:When do people often take up hobbies?

A．In their work time.

B．In the daytime.

C．In their free time.

D．In the holiday.

催化重整装置的循环氢量为40000Nm³/h，氢纯度为90%，进料量为25t/h，密度为0.74t/m³，分子量为100，氢油摩尔比为（）

A、7.14

B、6.43

C、5.28

D、4.78