[单项选择]According to the study, an infant child can form friendship as young as______.
A. six months old.
B. one year old.
C. eighteen months old.
D. two years old.

[填空题]Study shows that the pollen form GM plants can be carried on ______.

[填空题]S2. The study of meteorology can not be proceeded from S2 (1) , but from 　S2 (2)　.

[单项选择]来源:考试大-职称英语考试第二篇Study Says Dogs Can Smell Cancer 　　Dogs are known for their sense of smell.They can find missing people and things like bombs and illegal drugs.Now a study suggests that the animal known as man’s best friend can even find bladder(膀胱)cancer. 　　Cancer cells are thought to produce chemicals with unusual odors(气味).Researchers think dogs have the ability to smell these odors,even in very small amounts,in urine(尿).The sense of smell in dogs is thousands of times better than in humans. 　　The study follows reports of cases where,for example,a dog showed great interest in a growth on the let of its owner.The mole(痣)was later found to be skin cancer. 　　Carolyn Willis led a team of researchers at Amersham Hospital in England.They trained different kinds of dogs for the experiment.The study involved urine collected from bladder cancer patients,from people with other diseases and from healthy people. 　　Each dog was tested eight times.In each test there were seven samples f
A. private home.
B. training school.
C. hospital.
D. police station.

[单项选择]There are ______ the three-year-old child can count.
A. far more than toys
B. toys far more than
C. far more toys than
D. far more than toys

[单项选择] A survey is a study, generally in the form of an interview or a questionnaire, that provides information concerning how people think and act. In the United States, the best-known surveys are the Gallup poll and the Harris poll. As anyone who watches the news during Line campaigns presidential knows, these polls have become an important part of political life in (5) the United States. North Americans are familiar with the many "person on the street interviews on local television news shows. While such interviews can be highly entertaining, they are not necessarily an accurate indication of public opinion. First, they reflect the opinions of only those people who appear at a certain location. Thus, such samples can be biased in favor (10)of commuters, middle-class shoppers, or factory workers, depending On which area the newspeople select. Second, television interviews tend to attract outgoing people who are willing to appear o
A. are not based on a representative sampling
B. are used only on television
C. are not carefully worded
D. reflect political opinions