PartⅡ Key to the Tasks
Task 2.1
Task 2.2（No key)
Task 2.3
1.ovum；sperm
2.crown-rump length
3.abnormal development
4.On the Origin of Species
5.the molecular structure
6.Dolly the sheep；somatic cell nuclear transfer
Task 2.4
Task 2.5
1.D 2.C 3.D 4.B 5.C 6.C 7.A
Task 2.6（No key)
Task 2.7
Task 2.8
1.development
2.quality
3.ultrasound
4.fertilized
5.division
6.differentiation
7.embryonic
8.crown-rump
9.prenatal
10.fetus
11.anatomy
12.pathology
13.defect
14.factor(https://www.daowen.com)
15.environmental
16.gross
17.applied
18.circulation
19.hernia
20.congenital
21.surgical
22.renal
23.heredity
24.molecular
25.genome
26.diagnosis
27.chromosome
28.syndrome
29.recombinant
30.transgenic
31.stem
32.endogenous
33.spontaneous
34.somatic
35.general
36.carrier
37.recurrent
38.flip
39.sterile
40.gestational
41.conception
42.university-affiliated
43.m iscarriage
44.background
45.cognitive
46.sickness