not know of our invention， for they keep themselves 63． ＿＿＿＿＿

away our civilized world． For many years 64． ＿＿＿＿＿

a group of people call Aruntas have lived alone 65． ＿＿＿＿＿

in the center of Australia．

5

How robins（知更鸟） know when it is time 56．＿＿＿＿＿

to go back north？ They seem to tell by how

soon daylight lasts． In late winter， daylight 57． ＿＿＿＿＿

begins to last longest each day． When the 58． ＿＿＿＿＿

daylight lasts long enough， robins start north． 59． ＿＿＿＿＿

They fly by day． Each year they follow a same 60． ＿＿＿＿＿

fly－way． At first， they fly only few miles a 61． ＿＿＿＿＿

day． They stop often in the field to eat bugs 62． ＿＿＿＿＿

（小虫子）． Late， they seem in a hurry． They fly 63． ＿＿＿＿＿

over 100 miles a day． Some are going so far 64．＿＿＿＿＿

as 180 miles． When they get to home， they 65． ＿＿＿＿＿

always stay together high in a tree．

6

The Internet is playing a important part in 56． ＿＿＿＿＿

our daily life． On the net，we can learn about 57． ＿＿＿＿＿

news both home and abroad and some other 58． ＿＿＿＿＿ informations as well． We can also make phone calls， 59． ＿＿＿＿＿

send messages by e-mails，go to net schools，and 60． ＿＿＿＿＿

learn foreign languages by ourselves． Beside，we 61． ＿＿＿＿＿

can enjoy music，watch sports matches，and play the 62． ＿＿＿＿＿

chess or cards． The net even help us do shopping， 63． ＿＿＿＿＿

make a chat with others and make friends with them． 64． ＿＿＿＿＿

In a word，the Internet has made our life more easier． 65． ＿＿＿＿＿

7

People have different tastes in food． Some

feel they haven't a meal unless they have had 56． ＿＿＿＿＿＿

pork or other meat；some prefer chickens 57． ＿＿＿＿＿＿

or fish，and eats one or the other at every meal． 58． ＿＿＿＿＿＿

Others prefer vegetables and fruits or

grains but would enjoy a meal of potatoes， 59． ＿＿＿＿＿＿

noodles and carrots and some another fruits． 60． ＿＿＿＿＿＿

Others could live on the foods are called 61． ＿＿＿＿＿＿

fast foods，for example，a hamburger or 62． ＿＿＿＿＿＿

hot dog，French fries and a soft drinks． 63． ＿＿＿＿＿＿

Food can be prepared by so many ways． 64． ＿＿＿＿＿＿

Every is satisfactory to different person． 65． ＿＿＿＿＿＿

8

In the morning of November 18th，1755，an earthquake 56．＿＿＿＿ shook Boston．John，a professor at Harvard College felt a quake 57． ＿＿＿＿