一、Welcome to the unit：
1.growth hormones
2.beyond our imagination
3.the world’s first cloned mammal
4.a pair of new-born cloned claves
二、Reading：
5.point out
6.tissues and organs
7.interfere with nature
8.in general/generally speaking
9.praise sb for sth.
10.scientific breakthrough
11.consider doing sth.
12.center/focus/concentrate on
13.cure diseases
14.with the intention of
15.show （no） respect/disrespect for
16.even though/if
17.be desperate to do
18.push ahead with research
19.stem cell
20.be/feel sorry for
21.comment on
22.on a personal note
23.scientific terms
24.come/run across
25.be prepared to do
26.as a whole
27.make sense
28.agree to/with/on
29.give birth to （a baby）
30.in response to
31.go against nature
32.be responsible for
33.experiment with
三、Word power：
34.in favor of/supporting
35.the most complex bodies
36.be made up of
37.be similar to
38.learning process
39.security guards
四、Grammar and usage：
40.a challenging profession
41.next door neighbor
42.figure out
43.the other day
44.make decisions
45.split into … parts
五、Task：
46.fill in a form
47.take down
48.make changes to/change sth.
49.height-increasing operations
50.type sth. on one’s computer
51.a student representative
52.have the chance to do…
53.give a talk on
54.possible side effects
55.take turns to do…
56.complain about
57.follow in their footsteps
58.conduct a survey
59.To conclude，
60.urge sb to do sth.
61.a longer shelf life
62.resistant to
63.be harmful to
64.be limited to
65.ensure safety
66.head office of the supermarket chain
67.bring up
六、Project：
68.natural resources
69.be affected by
70.meet our own needs
71.spell disaster
72.be concerned about
73.at a fast rate
74.be blamed for doing
75.enjoy healthy and productive lives
76.turn out that…/turn out to be
77.cloud seeding
78.plastic surgery for teens
79.leave a lasting impression
80.come up with