三、完形填空

　　Scientists have searched for many years for a __1__ to tell whether a volcano __2__ will be small or large.Now, four scientists say they have discovered something in __3__ that will help do this.They __4__ the research on Mount Unzen on the southern Japanese island of Kyushu.

　　Mount Unzen exploded __5__ November,1990.Since then, more explosions __6__ 43 people and destroyed more than 2,000 homes.The volcano is still __7__ today.

　　The scientists say the lava of the volcano __8__ high level of an element (成分), __9__ is a sign of the presence of the lava from deep in the earth, not from the surface.They say it shows that the lava __10__ directly from inside the earth is __11__ with huge explosions instead of smaller ones.

　　The scientists examined the lava from 18 explosions of Mount Unzen that took place during many __12__ of years.They __13__ studied the lava from other volcanoes in the area that are older than Mount Unzen.The lava studied came from __14__ large and small explosions.The scientists found that large explosions contained __15__ of the element than small __16__.The scientists say if they __17__ this two years earlier，they __18__ the people living in the area __19__ Mount Unzen and saved many __20__.

1．A.glance B．method C．motor D．panic

2．A.eruption B．climate C．aspect D．district

3．A.lung B．ash C．lava D．crater

4．A.stated B．teased C．compared D．did

5．A.in B．on C．from D．off

6．A.have quitted B．have uttered C．have focused D．have killed

7．A.active B．abstract C．ridiculous D．mental

8．A.tries B．manages C．stresses D．contains

9．A.which B．that C．if D．when

10．A.going B．coming C．ending D．losing

11．A.decreased B．bored C．swallowed D．connected

12．A.hundred B．ten C．number D．thousands

13．A.also B．either C．too D．as well as

14．A.one B．neither C．both D．three

15．A.more B．much C．less D．few

16．A.that B．those C．ones D．this

17．A.knew B．had known C．know D．knowing

18．A.warn B．could have warned C．will warn D．can warn

19．A.on B．near C．away D．besides

20．A.lives B．life C．live D．believes

四、语法填空

　　Dogs are 1.________ very popular pet.Most of them just live with their families.But some dogs have very special jobs 2.________ (do)．A group of dogs 3.________ (know) as "Therapy Dogs"．These dogs are family pets with special trainings 4.________ allow them to go into public buildings and comfort people 5.________ need.The dogs are trained to be calm and quiet.Loud noises and unfamiliar places don't frighten them.They enjoy spending time with people.

　　Some therapy dogs go into places, such as hospitals and nursing homes.When the dogs visit the patients, the patients are cheered up.They have fun 6.________ (pet) the dogs and look forward to their visits.The dogs help to brighten their days.Therapy dogs can improve people's health as well.Studies show that when people pet animals, their blood 7.________ (press) and heart rates go down.They are calmer and 8.________ (they) mood improves.

Other therapy dogs work in schools and libraries.They serve as warm and caring 9.________ (friend) to children, but they also do 10.________ (much)．In one town in California, therapy dogs have become children's reading buddies.The dogs make a great audience.The children look forward to reading to the dogs, and the dogs love the