1 . To protect yourself against the cold weather, traditional Chinese medicine recommends food with relatively high calories for most people so as to __________ your energy.

A．reserve

B．preserve

C．persevere

D．reverse

2 . Researchers who have been working on non-avian dinosaurs were surprised to see an embryo beautifully ________inside a dinosaur egg,________ in a bird-like posture.

A．preserving … laying	B．reserving … sitting
C．preserved … lying	D．reserved … seated