答案:C
He thought the painting was of little______ so he gave it away to me.
A.cost
B.value
C.expense
D.price
雅鲁藏布江谷地农作物高产的原因是( )
A.日照时间长,有利于农作物进行光合作用
B.气温低,作物生长期长;昼夜温差大,有利于农作物养分的积累
C.气候适宜,降水丰富
D.土壤肥沃热量和光照条件好