血清中的主要抗体成分（） A.IgG B.IgM C.IgA D.IgD E.IgE

Steve Jobs was one of the fathers of the personal computing time and the founder(创建者) of Apple. He was also one of the great persons of the information age. Here are some of his greatest contributions.

Apple Ⅱ Jobs and Steve Wozniak founded Apple Computer Company in 1976. A year later, the apple Ⅱ was invented. This was the world’s first personal computer.	The iMac Under Jobs’ leadership, Apple introduced the iMac computer in 1998. The iMac became the first machine, which offered a CD-ROM slot.(插口)
The iPad By 2010, Steve Jobs was sure the world was ready to have a computer that would be great for watching movies and playing games. The touch-sensitive iPad is a great success.	iPhone 4s It came out on October 4, 2011 in America. It looks like iPhone 4. It has a larger and wider screen and a slimmer but wider case. It has a better camera and faster data transfer(文件处理)speeds.

小题1:When was the Apple II invented?

A．In 1976.

B．In 1977.

C．In 1997.

D．In 1998.

小题2:Where did the iMac first come out?
A. In China.           B. In UK.         C. In USA.           D. In UN.
小题3:Which one was the oldest machine of the four?

A．The Apple II.

B．The iMac.

C．The iPad.

D．The iPhone 4s

小题4:From the passage, we can know that the iPad _______.

A．has a better camera

B．is the first personal computer

C．has a CD-ROM slot

D．is great for watching movies

小题5:According to the passage, which of the following is TRUE?

A．iPhone 4s'screen is the same size as iPhone 4.

B．iPhone 4s has a larger and slimmer case than iPhone 4.

C．iPhone 4s uses less time to transfer data than iPhone 4.

D．iPhone 4s with an improved camera is cheaper than iPhone 4.