Now there are many thousands of computers all around the world. Some of them are big and some of them are
small.  They are very useful . People can use them to send and get e-mails,   look for   things on the Internet, play
computer games ... But in 1946 the first computer in the world cannot do these things. It is for calculating. It is as
big as a room! Only some scientists can use it. Some people say the first computer is in China. Why do they think
so? Because the first abacus(the oldest calculating machine) appeared much earlier in China than the big computer
in America.      
Notes: calculate 计算 scientist 科学家 abacus 算盘 appear 出现

回答下列问题:

1.What can people use the computer to do ?
_______________________________________________________.
2.Can the first computer do these thing in 1946?
___________________________________________________.
3.What is the first computer used for?
____________________________________________________________.
4.Why do some people think the first computer is in China?
__________________________________________
5.What do you think of it? Do you think the first  computer is in China ,too?
____________________________.

1. —Where ________(be) the backpacks?     
    —They are on the sofa.
2. Bruce only __________(watch) sports on TV!
3. —What's your ________(one) name?  
    —Mike.
4. Please take these _________(thing) to your brother.
5. Look at the boy. _______(he) father is a teacher.

1. —Where _____ (be) the backpacks?
    —They are on the sofa.
2. Look! Your _____ (tape) are on the bed.
3. There are some _____ (chair) in the room.
4. Please take these _____ (thing) to your brother.
5. Can you _____ (bring) your new (新的) photos here this afternoon?

1. They are my _____ (book).
2. Those _____ (case) are in the bus.
3. This is _____ (he) backpack.
4. Where's my _____ (math) book? I don't know.
5. Please take these _____ (thing) to your mother.