Unit 1Unit 1一、单项选择 ( 本大题共 15 小题;每小题 1 分,共 15 分 )在每小题的四个选项中,选出可以填入空白处的最佳答案。( )1.Playing computer games all day ________ bad for our eyes.A . is B . are C . be D . am( )2.If you don't know the new word , you can ________ in the Chinese - English dictionary.A . look up it B . look it up C . look up them D . look them up( )3.—Doing homework all the time makes us tired.What about going out to play ping-pong?—________ .A . Help yourself B . Good idea C . You're welcome D . ThanksABB( )4.Could you give me ________ ?A . an advice B . some advices C . the advices D . some advice( )5.My sister finds ________ interesting to learn history.A . that B . this C . one D . it( )6.—Can I come this afternoon or tomorrow morning?—________is OK.I'm free today and tomorrow.A . Either B . Neither C . Both D . NoneDDA( )7.—I want to know when Mr.Brown will arrive.—When he ________ , I will tell you.A . will arrive B . arrived C . arrives D . arrived( )8.—Many students don't know how to ________ pressure( 压力 ) and become worried.—I think they had better ask their teachers for help.A . argue with B . deal with C . quarrel with D . come up with( )9.My brother doesn't feel happy at school ________ he can't get on well with his classmates.A . though B . when C . unless D . becauseCBD( )10.It's your ________ as a student to finish your homework every day.A . duty B . hobby C . habit D . manner( )11.It's ________ a beautiful garden ________ we all like to play in it.A . so ; that B . such ; that C . so ; to D . very ;that( )12.Jack , I have trouble ________ out the math prob...