课时作业(二十一) 必修5 Unit 1 Great scientists .单项填空 1.(2017·龙岩四校联考)—Would you like to join us in the game? —________,for I have something important to attend to. A.I will B.I’d love to C.I won’tD.I’m afraid not 2.(2017·沈阳六校联合诊断)As far as I know,Mark is a(n)________shopper who always does some careful research on the market before he buys something valuable. A.fortunateB.generous C.enthusiasticD.cautious 3.(2017·武汉名校调研)Finding information in today’s world is easy.The ________is how you can tell if the information you get is useful or not. A.knowledge B.ability C.competitionD.challenge 4.(2017·云南毕业班质检)After further studying those fossils,Dubois,a Swiss scientist,announced with________that the socalled “Java Man” was merely an extinct monkey. A.courageB.certainty C.anxietyD.relief 5.(2017·厦门毕业班适应性考试)Graduation,in________opinion of many students,is________time to thank those who helped them through. A.the;aB.the;/ C.a;aD./;the |