Passage Three There are two factors which determine an individual’s intelligence. The first is the sort of brain he is born with. Human brains differ considerably, some being more capable than others. But no matter how good a brain he has to begin with, an individual will have a low order of intelligence unless he has opportunities to learn. So the second factor is what happens to the individual—the sort of environment in which he is reared. If an individual is handicapped environmentally, it is likely that his brain will fail to develop and he will never attain the level of intelligence of which he is capable. The importance of environment in determining an individual’s intelligence can be demonstrated by the case history of the identical twins, Peter and Mark X. Being identical, the twins had identical brains at birth, and their growth processes were the same. When the twins were three months old, their parents died, and they were placed in separate foster homes. Peter was reared by parents of low intelligence in an isolated community with poor educational opportunities. Mark was reared in the home of well-to-do parents who had been to college. He was read to as a child, sent to good schools, and given every opportunity to be stimulated intellectually. This environmental difference continued until the twins were in their late teens，when they were given tests to measure their intelligence. Mark’s I.Q. was 125, twenty－five points higher than the average and fully forty points higher than his identical brother. Given equal opportunities, the twins, having identical brains, would have tested at roughly the same level.
The case history of the twins appears to support the conclusion that _______. A. individual with identical brains seldom test at same level B. an individual‘s intelligence is determined only by his environment C. lack of opportunity blocks the growth of intelligence D. changes of environment produce changes in the structure of the brain
According to the passage, what kind of people are rare?
A) Those who don’t emphasize bookish excellence in their pursuit of happiness.
B) Those who are aware of difficulties in life but know how to avoid unhappiness.
C) Those who measure happiness by an absence of problems but seldom suffer from N.B.D’s. D) Those who are able to secure happiness though having to struggle against trying circumstances.
ID：9121-13199 ________ energy under the earth must be released in one form or another, for example, an earthquake. A. Gathered B. Accumulated C. Collected D. Assembled
ID：9121-12386 Directions:Please match each word in the left column with the corresponding explanation in the right one. squint A. to look with the eyes partly open B. to make it necessary for you to do sth C. having a lack of respect for certain organization, beliefs, customs D. to shine brightly E. to conquer F. unsuitable G. to do sth for sb as a favor or small service H. heavier, larger on one since than on the other I. extremely enthusiastic J. nearest in time, order, etc
