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问题 多项选择题

油脂的“油哈味”因不饱和脂肪酸分解的（）而发生的特殊刺激味。

A.酸

B.醛

C.酮

D.羟酸

答案

参考答案：C, D

选择题
若一个圆柱底面半径是2cm，侧面积是12πcm2，那么它的高是（　　）
A．6cmB．4cmC．3cmD．2cm
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补全对话，情景问答
选择正确的选项补全对话。
A. How are you?
B. I'm very well.
C. This is Wang Hong.
D. Nice to meet you.
E. It's an eraser.
F. Thank you.
G. My favourite colour is blue.
H. It's red.
I. And you?
J. Me, too.
A: Hello, Jenny. 1_____________________
B: Hello, Wang Hong. 2_____________________
C: I'm fine, thanks. 3_____________________
B: 4_____________________, thank you. 5_____________________
C: Nice to meet you, too.
B: What's this?
C: 6_____________________
B: What colour is it?
C: 7_____________________
B: It's very nice (漂亮).
C: 8_____________________
B: Well, what's your favorite colour?
C: 9_____________________
B: Oh. 10_____________________
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