toads are arthritis and in pain

a. toads are not built to be road runners—— they are built to sit around ponds and wet areas.

b. the task now facing the country is how to remove the toads.

c. furthermore, they soon take over the natural habitats of australia’s native species.

d. toads with longer legs move faster and travel longer distances while the others are being left behind.

e. but this advantage also has a big drawback—— up to 10% of the biggest toads suffer from arthritis.

f. but arthritis didn’t slow down toads outside the laboratory the research found.

答案：e b c a ffamily history

in an age when technology is developing faster than ever before, many people are being ______ (1) to the idea of looking back into the past. one way they can do this is by investigating their own family history. they can try to ______ (2) out more about where their families came from and what they did. this is now a fast-growing hobby, especially in countries with a ______ (3) short history, like australia and the united states.

it is ______ (4) thing to spend some time ______ (5) through a book on family history and to take the ______ (6) to investigate your own family's past. it is ______ (7) another to carry out the research work successfully. it is easy to set about it in a disorganised way and ______ (8) yourself many problems which could have been ______ (9) with a little forward planning.

if your own family stories tell you that you are ______ (10) with a famous character, whether hero or criminal, do not let this idea take over your research. just ______ (11) it as an interesting possibility. a simple system ______ (12) collecting and storing your information will be adequate to start with;a more complex one may only get in your ______ (13). the most important thing, though, is to ______ (14) started. who knows what you ______ (15) find?

答案：

51. idea　52. investigating　53. find　54. with　55. going　56. take　57. carry　58. way　59. avoided　60. that　61. over　62. possibility　63. start　64. way　65. knows

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