问题 问答题 简答题

检疫对象的制定依据有哪些?

答案

参考答案:

1、必须是对储运农产品确实有严重威胁而防除极为困难的。

2、必须是随着农产品及其包装物、运输工具等人为活动传播的害虫。

3、必须是本国尚无记录,或虽有发生但分布不广的种类。

单项选择题
完形填空

“It was all his own idea,” says Pat, the wife of California high school football coach Bob Peters. Bob had ___36___ made a “motherhood contract(合同)”—declaring that for 70 days this summer he would ___37___  the care of their four children and all the housework. ___38___ he didn’t even know how to make coffee when he sighed, he was very confident.

After40 of the 70 days, he was ready to ___39___. “ I was beaten down, “ admits Bob. “Not only is motherhood a ___40___ task, it is an impossible job for any normal human being. ”

Bob and Pat were married in 1991. After the married, Pat ___41___ a secretary to help put him through university. ___42___ Bob has been the football coach while Pat raised the kids. ___43___ two years ago Pat went back to work. “ I had been ___44___ children so much,” she ___45___, “I couldn’t talk to a grown-up. ” She continued to run the household, ___46___ -- until Bob sighed the contract.

Bob tried hard to learn cooking, but the meals he prepared were ___47___. For the last three weeks, the family ___48___ a lot--- sometimes having MacDonald’s hamburgers for lunch and dinner.

___49___ housekeeping, a home economics teacher had told Bob that a room always looks clean ___50___ the bed is made. “ I found ___51___ –I shut the doors,” he says. Soon the kids were wearing their shirts inside out. “When we went to ___52___ Pat at work, I made them wear their shirts 53 side out so they would look clean. ”

Now that Bob has publicly ___54___  he was wrong, he is ___55___ the child-raising and household tasks with Pat.

36. A. only     B. just     C. nearly D. ever

37. A. stick to B. set about    C. think about D. takeover

38. A. If  B. As      C. Since  D. Although

39. A. carry on       B. give up      C. break down       D. find out

40. A. strange B. pleasant      C. difficult     D. serious

41. A. sent      B. employed   C. learned from      D. worked as

42. A. In time B. Before long       C. Since then  D. Later on

43. A. Then    B. Thus   C. So      D. Still

44. A. near     B. after   C. about  D. around

45. A. insists   B. sighs   C. jokes   D. apologizes

46. A. besides B. therefore    C. however     D. otherwise

47. A. terrible B. tasty   C. expensive   D. special

48. A. starved B. traveled      C. worked out D. ate out

49. A. Due to  B. As for C. Along with D. Except for

50. A. until     B. before C. if D. unless

51. A. an easier way      B. a cheaper way    C. a cleaner way     D. a harder way

52. A. receive B. welcome    C. greet   D. fetch

53. A. good    B. wrong C. right   D. opposite

54. A. admitted      B. suggested   C. agreed D. explained

55. A. operating     B. realizing     C. sharing       D. performing