Xie lei's ____36____ course is helping her to get used to the _____37_____requirements of a Western university. "I remember the first _____38_____ I did for my tutor." she told me. I found an article on the Internet ____39____ seemed to have exactly the information I needed. So I made a summary of the article, _____40_____ my draft and handed the essay in.
In the 18th century California was ____41____by Spain.Spanish soldiers first arrived in South America in the early 16th century,when they fought against the native people and took their land.Two centuries later,the Spanish _____42_____in most parts of South America and along the northwest coast of ___43___we now call the United States.
Cloning plants is ____44____while cloning animals is very complicated.It is a difficult task to undertake.Many____45____to clone mammals failed.
36. preparation
37. academic
38. essay 39. that
40. revised ...
41. ruled 42. had settled
43. what 44. straightforward
45. attempts
