50. Killer bees can sting _____.

　 A. once two hours　　 　　　　　　　　　　 B. 400 times two hours

　 C. 3600 times two hours　 　 　　　　　　D. 7200 times two hours

49. The bees bred and made a new kind of bee. Here “bred” means _____.

　 A. attack　 　 B. run away　　　　　　 　 C. died　　　　　　　　　　 　 D. produce young

48. A scientist in Brazil wanted bees _____.

　 A. to go to Central America　　 　 B. to grow four times a year

　 C. to make more honey　　　　　 　 D. to breed with Brazilian bees outside

10、 (河南省方城县月考)　　 Killer bees started in Brazil in 1957. A scientist in Sao Paulo wanted bees to make more honey. So he put forty-six African bees with some Brazilian bees. The bees bred and made a new kind of

bee. But the new bees were a mistake. They did not want to make more honey. They wanted to attack. Then, by accident, twenty-six African bees escaped and bred with the Brazilian bees outside.

　　 Scientists could not control the problem. The bees spread. They went from Brazil to Venezuela. Then they went to Central America. Now they are in North America. They travel about 390 miles a year. Each group of bees, or colony (群体), grows four times a year. This means one million new colonies every five years.

　　 Why are people afraid of killer bees? People are afraid for two reasons. First, the bees sting (刺痛、蜇) many more times than a normal bee. Killer bees can sting sixty times a minute non-stop for two hours. Second, killer bees attack in groups. Four hundred bee stings can kill a person.

　　 Already several hundred people are dead. Now killer bees are in Texas. In a few years they will spread all over the United States. People can do nothing but wait.

47．Many girls ,the passage says ,are now likely to .

A．marry so that they can get a job

B．Leave school as soon as they can

C．give up their jobs for good after they are married

D．continue working until they are going to have a baby

44-47 　 　ADDD

46．When she was over fifty ,the late 19th century mother .

A．would expect to work until she died

B．was usually expected to take up paid employment

C．would he healthy enough to take up paid employment.

D．was unlikely to find a job even if she now likely.

45．We are told that in an average family about1990 .

A．many children died before they were five

B．the youngest child would be fifteen

C．seven of eight children lived to be more than five

D．four of five children died when they were five.

44．According to the passage ,around the year1990 most women married

A．at about twenty-five

B．In their early fifties

C．as soon as possible after they were fifteen

D．at any age from fifteen to forty－five

9、 　　　 (河南省方城县月考)　　　 The greatest recent changes have ,been in the lives of women ,During the twentieth century there was an unusual shortening of the time of a woman’s life spent in caring for children. A woman marrying at the end of the 19th century would probably have been in her middle twenties ,and would be likely to have seven or eight children, of whom four or five lived till they were five years old ,By the time the youngest was fifteen ,the mother would have been id her early fifties and would expect to live a further twenty years ,during which custom ,chance and health made it unusual for her to get paid work, Today women marry younger and have fewer children Usually a woman ‘s youngest child will be fifteen when she is forty－five and is likely to take paid work until retirement at sixty Even while she has the care of children ,her work is lightened by household appliances (家用电器)and convenience foods.

This important change in women’s way of life has only recently begun to have its full effect on women’ s economic position Even a few years ago most girls left school at the first opportunity and most of them took a full－time job However ,when they married ,they usually left work at once and never returned to it ,Today the school－leaving age is sixteen ,many girls stay at school after that age ,and though women tend to marry younger ,more married women stay at work at leas until shortly before their first child is born Very many more after wads ,return to full or part-time work Such changes have led to a new relationship in marriage ,with both husband and wife accepting a greater share of the duties and satisfaction of family life, and with both husband and wife sharing more e-qually in providing the money and running the home ,according to the abilities and inter-est of each them.

43. Which of the following is the main factor (因素) of a successful performance?

A. Strength.　　 B. Exactness.　　 C. Speed.　　 D. Carefulness.

40-43CBDB