Unit 1 Topic 1 Our country has developed rapidly.
Africa(非洲)volunteer(志愿者)radio(n.收音机；无线电广播)chess(n.国际象棋)ever(adv.在任何时候；从来；曾经)更多单词 >>
Unit 1 Topic 2 The population in developing countries is gro
transportation(交通)Russia(俄罗斯)cinema(电影院)yet(adv.（常用于否定句或疑问句）还；仍然)excellent(adj.极好的；优秀的)更多单词 >>
Unit 1 Topic 3 The world has changed for the better.
artist(画家；艺术家)club(俱乐部)secretary(秘书)term(n.学期)visitor(n.游客；访问者)更多单词 >>
Review of Unit 1
beach(海滩；沙滩)volleyball(n.排球)sunshine(n.阳光)hardly(adv.几乎不；几乎没有)teenager(n.（13-19岁的）青少年)更多单词 >>
Unit 2 Topic 1 Pollution has caused too many problems.
bear(熊)bee(蜜蜂)butterfly(蝴蝶)deaf(聋的)breath(呼吸)更多单词 >>
Unit 2 Topic 2 All these problems are very serious.
thirsty(渴的；口渴的)none(pron.没有一个；毫无)although(conj.虽然；尽管；即使)everybody(pron.每人；人人；所有人)worst(adj.&adv.最差（的）；最坏（的）；最糟（的）)更多单词 >>
Unit 2 Topic 3 What can we do at home to protect the environ
can(能)bite(咬)insect(昆虫)hurry up(快点)deep(深的)更多单词 >>
Review of Units 1-2
motorbike(摩托车)difference(n.差别；差异)seriously(adv.严重地；严肃地；认真地)video(n.录像带；录像)allow(v.允许；准许)更多单词 >>
Unit 3 Topic 1 English is widely spoken throughout the world
Britain(英国)pack(收拾（行李）)cartoon(漫画)Spanish(西班牙的)tonight(在今晚)更多单词 >>
Unit 3 Topic 2 Some things usually have different meanings i
differently(adv.不同地)mistake(n.错误；失误)compare(v.比较)typical(adj.典型的)silence(n.沉默；缄默；无声)更多单词 >>
Unit 3 Topic 3 Could you give us some advice on how to learn
sleepy(困的；欲睡的)notebook(笔记本)textbook(课本)diary(日记)tape(n.磁带；录音带；录像带)更多单词 >>
Unit 4 Topic 1 When was it invented?
crayon(蜡笔)mark(分数)invention(发明（名词）)balloon(气球)robot(机器人)更多单词 >>
Unit 4 Topic 2 I'm excited about the things that will be dis
dancer(跳舞者；舞蹈演员)describe(v.描述)screen(n.银幕；屏幕)astronaut(n.宇航员；航天员)journey(n.（尤指长途）旅行；行程)更多单词 >>
