小军新买的橡皮擦块用了一段时间后,没有发生变化的物理量是[ ]
A. 密度
B. 质量
C. 体积
D. 重量
答案:A
阅读短文,选择正确答案。
I'm Amy. I'm 11 years old. I'm from Canada. I live in Beijing now. I'm going on a trip tomorrow. I need
a train ticket from Beijing to Shanghai. I'm packing my suitcase. I want that pair of shoes. I like them very
much. They are red. Red is my favourite colour. I don't want that yellow sweater, because it's old. Oh, I want
my teddy bear, too. It's my best friend.
1. Amy is from ___________.
A. China
B. Canada
C. U. S.
2. Does Amy like her red shoes?
A. Yes.
B. No.
C. I don't know.
3. Amy needs a ___________ ticket from Beijing to Shanghai.
A. bus
B. airplane
C. train
4. ___________ is Amy's favourite colour.
A. Red
B. Yellow
C. Blue
肝功能不全的患畜应用主要经肝脏代谢的药物时需着重注意()。
A.个体差异
B.高敏性
C.过敏性
D.选择性
E.酌情减少剂量