51.Today there is widespread agreement among researchers tha

51.Today there is widespread agreement among researchers that _______ of fathers from households causes serious problems for children.
A) absence B) departure C) failure D) decline
52.Studies show that the younger a child starts to smoke the greater are his ________ of dying early.
A) rates B) chances C) expectations D) fears
53.Incomes in these countries are very unequally ________ ,with a few very rich and many very poor people.
A) distributed B) arranged C) dismissed D) conducted
54.Computers have opened up a lot of job opportunities for women that weren’t ________ before.
A) suitable B) capable C) reliable D) available
55.The boy decided to study dancing ________ the fact that he had lost his left arm in a car accident.
A) in view of B) in spite C) despite D) regarding
56.Most engaged couples carefully plan their wedding and regard it as an important _________ in their lives.
A) situation B) scene C) occasion D) incident
57.A short nap (小睡) at the end of the day relaxes me; _________ ,it gives me the energy to spend the evening on my homework.
A) in addition B) even so C) in contrast D) however
58.Don’t take what he said too ________; he is merely asking about the possibility of further investment in this part of the country.
A) earnestly B) seriously C) anxiously D) cautiously
59.I had trouble understanding the French,so I got the English _______ of the book from the library and read it.
A) vision B) interpretation C) edition D) version
60.Another thunderstorm slammed ________ the mountain as I limped up the path to the house.
A) down B) on C) against D) off
57，58，60题不需要了，其它的要解释