多选题 Because insect communities serve as a sort of barometer, ______ conditions in their ______, an entomologist"s analysis of the insect species in a handful of soil can reveal much about the ecosystem.

A、 preserving
B、 stabilizing
C、 registering
D、 environment
E、 range
F、 destination

【正确答案】 C、D

【答案解析】[解析] ●逗号说明前后同义重复。
●第一空与reveal(显示)同义重复。preserve保护，stabilize使稳固，register表现出。答案选C。
●第二空与ecosystem(生态系统)同义重复。environment环境，range范围，destination目的地。答案选D。