一、詞棠(18%):请選出適合題意的答案,每題2分。
J. threat
B. involve K. ruination
C. expecting L. newly
D. awarded M. behave
E. on
F. lockdowns
N. warned
O. extending
G. mistake P. waiting
H. engage Q. in
I. survive R. widespread
3. Scientist said there is evidence that early humans slowed down their metabolism so they could_________ longer in winter without food.