Unit 1 Great explorations
第4页 Reading
A1-8 heab  fdcg
B 1.brave,hard-working and selfless
   2.the weather    ice and penguins
第6页 C1 段落大意配对
   1-5 dcaeb
C2 1.surprised and delightful
     2.答案见原文第三段正中间
     3.a little sad but proud  略
D1 D2 略
第8页 Vocabulary and grammar
A1-5 set up  discover  set sail  lead to  open up  as well as
B 2-6 too fun to  well enough to  hard enough to   so much that   hungry enough to
Listening and speaking 听说略
第10页 More reading
1-5 ceadb
第11页 完形填空
1-8 accb   ddbc
第13页 读影评，回答问题。
 1.Matt Kowalski
 2.on a spacewalk
 3.pieces of a damaged satellite
 4.go to the nearby international space station
 5.Gravity is a powerful film about a woman's journey in a lovely space
 6.It's worth watching because it's interesting and moving
C2  1  2 略
第14页 Writing
   One day, Qin Shihuang heard that there was a medicine in East Sea that could make him live forever,so he decided to send Xu Fu to look for it.
   Xu Fu went on two trips.On the first trip,he tried very hard but found nothing.Qing Shihuang didn' t want to give up, so Xu Fu began his second trip.On the second trip,Xu Fu took more people with different skills to help him.After travelling for many days,Xu Fu arrived on an island,It was warm and people there were very friendly.so he deided to teach people there many skills.He found himself happy to stay here,so he never returned.