13．The illegal sale and use of drugs
Despite the respect of most Americans for law and the determination of the legal system to protect the rights of individuals，the United States，like all other countries，does experience crime．Especially in large cities，the crime rate （33）can be high．
A high percentage of crime in the United States is directly related to the illegal sale and use of drugs．Drugs are smuggled into the country by （34）organized（organize） groups despite intense efforts by the government to stop the illegal drug trade．Drug abuse in the U．S．has come to be regarded as one of （35）the most challenging（challenging） social problems facing the nation．The drug issue always excites strong emotions of American （36）because drug abuse is regarded as a major threat to American society，particularly to its younger members．Drug abuse is a social problem as it has （37）a wide range of social costs．For example，drug is closely related with crime，automobile accidents．Those （38）who become addicted to drug use sometimes rob or break into houses or stores to steal money to pay for the drugs．It has serious effects on individuals physically and mentally，（39）and the economic losses caused by drug abuse are great．
Drug use has caused great concern in the United States．The federal government has worked hard to stop the （40）growing（grow） of drug plants in other countries．It has also set up special agencies，sometimes working with agencies from other nations，to catch the smugglers outside and inside the United States．Teachers and many citizens work together to teach children about the dangers of drug use．Many government agencies in the states and private citizen groups work to help drug addicts give up their drug use and turn to useful lives．

12．A 13-year study of early childhood development（61）made（make） by Harvard University has shown that，by the age of three，most children have the big potential（62）to understand（understand） about 1000 words-most of the language they will use in ordinary conversation for the rest of their lives．
    Furthermore，research has shown that while every child is born with a natural curiosity．It all decline（63）greatly（great）during the second and third years of life．Researchers say that the human personality（64）is formed（form）during the first two years of life，and during the first three years children learn the basic skills they will use in all their later learning both at home （65）andat schoo1．
 （66）Itis generally acknowledged that young people from poorer socio-economic  backgrounds tend to do less well in our education system．As a resuIt of the research evidence of the（67）importance（important）of the first three years of a child's of life，a pilot programme（68）that/whichfocused on parents as the child's first teachers started in the US．As the programme shows，working with the family，rather than bypassing the parents，（69）is（be）the most effective way of（7）0helping（help）children get off to the best possible start in life．

11．Ten Chinese engineers were driving down a road to a National Forest Park．They were  （61）suddenly（sudden） amazed by what they saw．Three tall animals，（62）covered（cover） with long black hair，were crossing the road．On （63）seeing（see） the animals，the engineers immediately stopped and ran after them．However，when they saw （64）themmove through the forest with great speed and strength，they did not dare to follow any  （65）farther（far）．
    The men did not take any photographs but scientists were delighted by the （66）discovery（discover），Because the engineers are all well educated people and scientists feel they can rely on what they （67）described（describe）．
    Scientists returned to the forest，collected some hair and measured footprints，（68）whichare about 20 inches．They appear to be the animals'feet!Chinese scientist have now set up a special group to exchange information and made a study of the forest．But in the meantime，some people refuse to believe that this half-man，half-monkey （69）exists（exist）．They will not believe it（70）untilone of the animals have been caught．

10．Helsinki，capital of Finland，is offering young people the chance to rent （61）a cheap apartment in an old people's home，if they agree（62）to spend（spend） time socializing wiLh the elderly residents．
The city council（议会）is seeking （63）applications（apply） from renters under the age of 25who would like to spend between three（64）andfive hours each week with their older neighbors．（65）Inexchange，they'll get a studio flat（66）measuring（measure） 23square meters with a private kitchen，bathroom and balcony for 250euros per month．Those（67）whoapply don't need any specific care experience．There are staff to look after the elderly．
More than 60people have applied for the spaces in less than a week，and the idea has alsoBeen（68）warmly（warm） welcomed by Finns on social media．"Creat project!Hopefully it will spread to other areas，"（69）writes（write） one person on Facebook，while another supports the scheme for bringing （70）different（difference） generations together．

9．It is not easy to find true friends．And you often find that someone who you thought you could trust may have let you （48）down．There are ways you can know if a friendship is true
Generally speaking，a true friend is someone （49）who will be there with you no matter what happens．They will stand by you through bad and good times，（50）and they will be there to help you grow in new ways．
A true friend will be honest and be （51）someone you can depend on．They will listen and be someone you can talk things over with，even if they may not have advice to share （52）with you．
However，friendship is （53）a two-way street．To find true friends and keep them，you must in turn be the same as well．It will fall apart fast （54）if only one person is giving and putting all the effort．
Actually，there will be barriers in the road （55）but that is the test of true friendship．If it can survive those barriers，it will be stronger and better than ever．

8．-I've told Nancy many times about the meeting，but she still forget it!
-I understand．Actually，anyone _________ be very forgetful at times．（　　）

A．

must

B．

should

C．

would

D．

can

7．-I don't care for baseball．
-How can you say you don't like something        you've never even tried it!（　　）

A．

till

B．

after

C．

unless

D．

When

6．Lifting off at sunrise，the hot air balloon goes wherever the wind        blow．（　　）

A．

may

B．

must

C．

need

D．

should

5．-Where on earth have they gone？
-I have no idea，but I wish I          ．（　　）

	A．	know		B．	knew
	C．	would know		D．	would have known

4．So popular ________ that the young generation are dying for one．（　　）

	A．	has iPhone 4 become		B．	iPhone 4 has become
	C．	had iPhone 4 become		D．	iPhone 4 had become