(一)主题词汇盘查
(已会词汇，在□内打“√”；欠熟练词汇，多翻阅识记)
①evolution □ ②ecology □
③grow □ ④breakthrough □
⑤clone □ ⑥endangered □
⑦decline □ ⑧deliberately □
⑨disaster □ ⑩extinct □
?survival □ ?wildlife □
?bacterium □ ?branch □
?fibre □ ?trunk □
?harvest □ ?parrot □
?sow □ ?bush □
