儿童期热能消耗是（）
A.生长发育消耗的热能
B.维持基础代谢消耗的热能
C.食物特殊动力作用
D.体力活动消耗的热能
E.以上皆是
参考答案：E
— It looks heavy. Shall I give you a hand?
— ______. [ ]
A. No, never mind
B. Yes, my pleasure
C. No, thanks
D. Yes, I do
John is talking ______ the phone with his mother. [ ]
A. to
B. on
C. at
D. with
