Promotions are usually used to attract low－income shoppers.A．YB．NC．NG

● The computer you are using is protected usually by （75) . （75)A. password B. key C. mou

● The computer you are using is protected usually by （75) . （75)A. password B. key C. mou

● The computer you are using is protected usually by （75) . （75)A. password B. key C. mou

Men usually begin to worry about their weight when they are nearly 40.A．RightB．WrongC．Not

At sea, we usually use（) to provide hot water.A.a heaterB.an exhaust gas boilerC.an engin

I dont like to buy things with a label of "the latest technology", since they are usually_