8. Answer B analyzes the improper collocation of "problem" and "improvement" in item A, and the word "improvement" is changed to "solution"; Item C "because" covers up the subject and deletes "make". Item D "Well done" lacks an object header, so add "work" after "teaching achievements".
10. In the following sentences, it is not bad to choose (Zhejiang) A. Only by actively guiding herders to diversify their operations, controlling the number of livestock, reducing the demand for pasture, and returning grazing to grassland, it is possible to fundamentally save pure wild yaks. B the national autonomous university of Mexico recently held a seminar on influenza a virus H 1N 1. Some experts believe that Mexico is about to enter a hot summer, which may help reduce the spread of influenza virus. C. Several popular movies with the theme of Nanjing Massacre released this month restored many historical details, which made us deeply feel the courage of film creators to face human tragedies. D. Lin Ping is an ordinary employee of an insurance company. Her story of donating liver to a girl who is not related by blood moved netizens to leave messages on the Internet spontaneously, and everyone enthusiastically called it "the pride of Ningbo".
10. Answer A: In item B, "reduction" and "diffusion" are not properly matched and changed to "inhibition"; Item C "in ……" covers the subject of the sentence and should be deleted; Item D, "The story of her donating liver for unrelated girls moved the majority of netizens to leave messages on the Internet spontaneously", was revised to "The story of her donating liver for unrelated girls moved the majority of netizens, and netizens spontaneously left messages on the Internet".
Further reading: How to buy insurance, which is good, and teach you how to avoid these "pits" of insurance.