【简答题】A streamlined contour offers _____________ whena product moves through air or water.A. minimum resistance B. maximum resistance C. maximum efficiency
【简答题】—It looks as if we can’t bathe here. It isn’t clean enough. — ________ A.What a shame! B.Yes, it isn’t clean at all. C.Yes, we can’t bathe here. D.No, Let’s have a try.