A．→+x
B．→+x
C．+→+x
D．+→+x
答案：C
—Would you like some rice? —_______. I would rather have a piece of bread.
A．Yes, please
B．No problem
C．That’s OK
D．No, thanks
下面油漆成份中既起到稀释又有溶解作用的是（）
A.柔软剂
B.溶剂
C.稀释剂
→
+x
→
+x
+
→
+
→
+x