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

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相关考题

单项选择题

Sometimes it is difficult （） the skills you have.

A．to play
B．abilities
C．to recognize
D．recognizes

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

单项选择题

If teachers want to find out if their students wrote their own papers,（）

A．they ask other teachers to read their students' papers
B．they ask their students to list their sources of information
C．they can sign up for the Internet service
D．they search the Internet and compare papers