根据以下资料，回答试题。
We first think of the traditional or nuclear family.This is a two-generation family, the father and the mother and their own children.Most couples wanted to have four children, two boys, two girls.
Some nuclear families, however, may add one or more grandparents to come to live with them, that is three generations.This kind of family with grandparents, parents, and grandchildren is called an extended family.This family type was not very common during the later half of the twentieth century, but it's becoming more common now as an elderly grandparent moves in to live with a son or daughter.This is more possible now that American homes have become larger.What is interesting, however, is that after the grandchildren move out of the home and start their own families, this extended family shrinks back to a nuclear family, with just two generations again living together, a grandparent and parents, with the grandchildren coming only for occasional visits.
Now, the fatherless or motherless family is one kind of what we call a single-parent family.In the fatherless family it's just the mother and her children.As I said, this can be the result of the husband's death, of an unmarried mother, of a separation or divorce.There are also a growing number of motherless families--where the father raises the children, for any of the same reasons.A motherless family may also be fatherless, but still a family with one adult.This is becoming more common in the big cities where a grandmother will raise her daughter's children while the daughter goes elsewhere to work.
One other new kind of family is becoming increasingly more common.A single parent with one or more children will marry again.Perhaps the other parent is also a single parent.Together they will start what is called a blended family, which blends together or combines the children from two other families.
第45题 Who usually looks after the children in a both motherless and fatherless family in America?
A. The children's aun
B. The children's nursery or schoo
C. The children's grandmothe
D. The children's neighbou
答案：C
解析：第二自然段后半部分写到：“A motherless family may also be fatherless，but still a family with one adult.This is becoming more common in the big cities where a grandmother will raise her daughter’s children while the daughter goes elsewhere to work.”由此可见，本题选C。
第46题 How is a blended family formed?
A. A blended family is formed by two single-parent familie
B. A blended family is formed by a nuclear family and a grandparen
C. A blended family is formed by a nuclear family and grandparent
D. A blended family is formed by two fatherless familie
答案：A
解析： 由第四自然段可知。
第47题 What is true to the fact in America?
A. There are more and more members in a famil
B. There are less and less members in a famil
C. There is an increasing number of grandparents who refuse to look after their grandchildre
D. There is an increasing number of grandparents who live separately from their childre
答案：A
解析： 由第二自然段中句子“This is more possible now that American homes have become Larger ”可知，A正确。
第48题 Which of the following is the best title of this passage?
A. Famil
B. American Familie
C. Family Type
D. Four Family Types in Americ
答案：D
解析： 全文讲了四种不同类型的家庭：两代人的家庭、三代人的家庭、单亲家庭和再婚家庭。
Californian Michael Schwabe said goodbye to the gas pump two years ago.He leased an electric car.Schwabe says he gets more out of driving an electric car than just a charge.
"With the price of gasoline and with the problems with clean air, it's important we get electric vehicles out on the road."
On California roads there are about two thousand electric cars.By 2003, ten percent of all new cars may be required to have zero emissions.This is a mandate automakers say it is way ahead of its time.
Gloria Bergquist of the Alliance of Auto Manufacturers says, "The technology (for zero emissions) isn't here yet; it still needs advancement in driving range to make it more appealing to a wider consumer audience."
Auto makers blame it on the batteries.Power runs out on most cars after about 70 miles.However, some cars can now go more than 100 miles on a charge.Batteries are expensive.Carmakers say there is nothing they can do about it.
Tim Carmichael of the Clean Air Coalition says, "The automakers have not built a vehicle unless required to do so, so it's very important for the state to stay committed to this program requiting automakers to build small amounts in beginning years and then the market will take off."
第49题 When did Michael Schwabe say goodbye to the gas pump?
A. Two days ago
B. Two months ago
C. Two years ago
D. Ten years ago
答案：C
解析：参见第一段的第一句。
2017成考试题：2017年成人高考专升本英语考试备考试题及答案
2017成考报名：2017年成人高考报名时间/入口
