41.His proposal is very _______. We do not need any explanation.
A. concrete B.loyal C.grey D.draft
42.This is a _______ computer, which we just bought for our research.
A. detective B.luggage C.digital D.grave
43.The two pictures are _______. We don’t know which is the copy.
A. identical B.likely C.limited D.resemble
44.If you don’t want to wash your jacket, you may send it to a _______.
A. participant B.planet C.laundry D.ribbon
45.If the _______ in the test is too small, we can not get a good result.
A. sample B.percent C.leisure D.flight
41.A 42.C 43.A 44.C 45.A