一般情况下,动摩擦因数大于静摩擦因数。()
A. 对
B. 错
Thank you for me with my luggage.
A. help
B. to help
C. helps
D. helping
Wemustavoidconflictswhenhavingagroupdiscussion.
A. 对
B. 错
——What are you going to do this weekend?——I’m planning to a short trip.
A. talk
B. take
C. buy
D. show