单项选择题
A．255 were originals B．45 were originals C．85% were fakes D．155 were originals
Sometimes it is difficult （） the skills you have.A．to p...
单项选择题Sometimes it is difficult （） the skills you have.
A．to play B．abilities C．to recognize D．recognizes
The results from the Internet service （）A．are done in a...
单项选择题The results from the Internet service （）
A．are done in a week B．aren't very clear C．are done in 24 hours D．take a long time
Instead of researching and writing their papers, some s...
单项选择题Instead of researching and writing their papers, some students （）.
A．ask other students to write their papers B．draw pictures instead C．copy from reference books D．copy papers or large parts of papers from the Internet
