Task 1 . Mark the letter A,B,C,D on your answer sheet to indicate the correct answer to each of the following questions. 1. This new technique of artificially growing cells copies what actually happens in .... nature . A. no article B. a C. an D. The 2. Species diversity has provided humans .... so many essential things. A. of B. for C. On D. with 3. The number of people claiming unemployment benefit .... sharply this month A. Have risen. B. has risen. C. are rising. D. were risen 4. We played quite well today but our .... performed better and scored goals A. referees B. opponent C. supporters D. spectators 5. They still need .... more money to finish the project A. many B. a number C. Litter D. a great deal