The police have to _______ their list of suspects.
A. is comprised of
B. base on
C. narrow down
D. take into consideration
查看答案
What aspects does a detailed self analysis mainly involve?
现代鸟类（不包括饲养种）都能飞行。
A. 对
B. 错
麻雀在收获季节吃掉大量的谷物，应消灭这种鸟类。
A. 对
B. 错
所有鸟类只在身体左侧具有卵巢，非生殖季节生殖腺显著萎缩。
A. 对
B. 错
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