不进则退。
第二部分中学生百科英语U
it1Lesso
1TheZipper一、生词1zipper拉链2embarrassi
g令人尴尬的3be
d弯曲4i
ve
t发明5doze
（一）打，十二个6apart不在一起，分开二、短语1awo
derfuli
ve
tio
一项精彩的发明2i
ma
ycoloursa
dsizes以许多种颜色和大小的形式3takeoff脱下4theotherway另一个方向反差相反
Letsleepi
gdogslie
5solvetheproblem
f解决问题6doze
sof…几打…数打…三、句型1Thezipperisawo
derfuli
ve
tio
拉链是一项精彩的发明。2Theycomei
ma
ycolorsa
dsizes他们有许多种颜色和大小。3Thiswasembarrassi
g这令人尴尬。U
it1Lesso
2ThePostage一、生词1postage邮资，邮费2prepay预付费3deliver运输，输送4receive收到5cross横跨，跨越二、短语1thepostagestamp邮票三、句型1ThepostagewasprepaidStamp
f邮费是预付的。2Thepostofficedeliveredtheletter邮局运输信。3Collecti
gstampsiso
eofthemostpopularhobbiesi
theworld集邮是世界上最受欢迎的爱好之一。U
it1Lesso
3Pe
cilsa
dPe
s一、生词1lead铅2graphite石墨3gri
d碾碎，把。。。磨成粉4shape形状5i
k墨水6leak漏，渗漏7bake烘烤二、短语1apieceofwoodwithleadi
sideit一块木头里含有铅2startmaki
gpe
cilsfromgraphite开始用石墨制作铅笔3theshapeofastick呈棍子形状4leakout泄露、走漏
f5fou
tai
pe
钢笔三、句型1Theycould
’twritewithfou
tai
pe
si
airpla
esbecausethei
kleakedout他们不能在飞机上用钢笔写字因为墨水泄漏2Hesaiditwasapieceofwoodwithgraphitei
sideit他说这是一块石墨在里面的木头。3Theygri
dthegraphitemakeiti
totheshapeofasticka
dbakeit他们碾碎石墨使它变成一根棍子的形状然后烤它。4I
1795someo
estartedmaki
gpe
cilsfromgraphite1795年，有人开始用石墨制作铅笔。U
it1Lesso
4TheUmbrella一、单词1pri
ce王子2pri
cess公主3tribe部落4object物体5climate气候6fold折叠，合拢二、短语1keeptherai
a
dthesu
offpeople
f使人们远离雨水和阳光Nottoadva
ceistogoback2foldup折叠3i
thisway用这种方法4useumbrellasagai
sttherai
用雨水来防备雨水5arai
yclimate多雨气候三、句子1E
gla
dhasarai
yclimatea
dumbrellasareveryusefulthere英格兰是多雨气候，伞在那儿很有用。2Theumbrellaisaveryordi
aryobject伞是很普通的物件。3Perhapsyouarereallyaki
goraquee
apri
cessorapri
ce也许你真的是国王或王后，公主或王子。4SomeAfrica
tribesstilluseumbrellasi
thisway一些非洲部落仍然用这种方式用伞。5Mostumbrellasfoldupsoitiseasytocarrythem大多伞可以r