【单选题】A seven-member committee of students is formed to study environmental issues. What is the likelihood that any one of the seven is chosen as the spokesperson?
【单选题】A seven-member committee of students is formed to study environmental issues. What is the likelihood that any one of the seven is chosen as the spokesperson?
【简答题】Which of the following sentence is NOT appropriate to be the beginning one of a summary?A. Thispaper reports an empirical study on _____.B. This report focuses on the problem of _______.C. This articl...