若m ― n = 4，则2m2― 4mn + 2n2的值为
A：32
B：22
C：12
D：0
⑴Amy ____ A. climbed the Tianshan Mountains yesterday.
⑵Sam ____ B. went to Xinjiang last year.
⑶Lingling ____ C. visited the Tianchi Lake last week.
⑷Daming ____ D. rode a horse last year.
⑸Tom ____ E. went to Beijing last summer holiday.
北京经济发展具有的优势是（ ）
There ______ some beef in the fridge. Let's make some beef noodles.
