A．It's for the presentation. B．It's for the paper. C．It's for the observations. D．It's for the conclusion.
A．Ignore the presentation. B．Divide the assignment. C．Omit some chapters. D．Listen more carefully.
A．Charles Darwin. B．Patrick Matthew. C．Alfred Russel Wallace. D．Matthew Wallace.
A．Look it up in her textbook. B．Search on the Internet. C．Ask her professor for help. D．Go to the library.