PeriodTwoLearningaboutLanguage&UsingLanguageⅠ
biologyn
生物学biologistn
gravityn
万有引力;重力3
satelliten
卫星;人造卫星4
gentleadj
温和的;文雅的5
physicistn
物理学家physicsn
climaten
crashvi
碰撞;坠落8
spaceshipn
拉(力);拖;牵引力10
floatvt
(使)浮动;(使)漂浮;n
asaresult结果2
blockout挡住(光线)3
crashinto撞击;撞入4
cheerup感到高兴;感到振奋5
nowthat既然6
breakout突发;爆发7
watchoutfor密切注意;当心;提防Ⅰ
阅读课文,匹配信息1
Matchthethreewaysinwhichgravitychanged
(1)Lefttheearth(B)A
Itbecameverylight
(2)Inspace(C)B
Thegravitybecameverystrong
(3)Onthemoon(A)C
Thegravitydisappeared
Matchthewaysinwhichweightchanged
(1)Lefttheearth(C)A
Heisweightless
(2)Inspace(A)B
Heweighslessthanontheearth
(3)Onthemoon(B)C
Hisweightisnormal
阅读课文,判断正(T)误(F)1
Itwasbecausetheyweretoofarfromtheearthtofeelitspullthattheywouldnotfallbackto