Many people like to keep dogs as their pets．But do you know dogs were not home animals long long ago?

The first wild dogs were trained by ___1___ in Europe about 10，000 years ago．These first “dogs” were not like what we have now．They may have been small wolves（狼）．These dogs often came near people to ___2___ some food．Some of the young dogs were kept by people and grew up with them．

People believed the dogs were a ___3___ to them in many ways．The dogs helped them to hunt（狩獵）．They could smell and hear danger before people could．They helped keep people warm on cold nights．So it was ___4___ to keep the dogs．

Since those early days，people and dogs have always been together．We should not ___5___ them because they are our friends．

1．A．wolves                  B．cats                     C．people                    D．students

2．A．look for                 B．look up                C．look out                 D．look after

3．A．trouble                  B．help                     C．danger                   D．problem

4．A．hard                      B．useless                 C．easy                             D．helpful

5．A．save                      B．like                      C．hurt                       D．feed

My name is Zhang Qing and my sister is Zhang Wei．Since middle school，we have dreamed about taking S great trip by __1__．When we graduated from college，we finally got the __2__ to do it．

We started our long bike ride __3__ the Mekong River in October．__4__ it was autumn，the snow had already started to fall in Tibet．Our legs felt so heavy and __5__ that we thought they had frozen．Have you ever seen snowmen ride bicycles? Zhang Wei was in front of me as usual．I knew I didn't need to encourage __6__．To climb up the mountain road was hard work but __7__ the hills was great fun．When we reached a valley（山谷），it became much warmer．We had to change our clothes．In the early evening，we stopped __8__ our tents and then we ate．After supper，Zhang Wei went to __9_ but I stayed awake．At midnight，the sky became clear and the stars were bright．There was almost no wind but the sound of the fire．What a quiet night! We have already travelled so far．We are reaching Dali in Yunnan Province．There our cousins Wang Lin and Yu Hang will __10__ us in the ride trip．I'm sure we'll have a greater time together．

1．A．bus                       B．bike                     C．train                             D．plane

2．A．chance                      B．experience            C．information            D．instruction

3．A．in                   B．on                       C．a(chǎn)long                     D．a(chǎn)bove

4．A．Although               B．Because               C．Since                     D．If

5．A．warm                    B．hot                      C．comfortable            D．cold

6．A．him                       B．her                      C．me                        D．them

7．A．go up                    B．go down              C．to go up                 D．to go down

8．A．to put up              B．putting up            C．building                  D．to put on

9．A．work                     B．sleep                    C．travel                     D．run

10．A．greet                   B．visit                     C．join                        D．interview