高等继续教育 / 高级英语II
正确率：100%
题型描述: 单选题
Vegetables should be eaten while they are young and tender; they taste better, and many of them have more protective food value then than they ＿＿＿＿＿＿＿＿ when they get too mature.
A.are
B.is
C.do
D.does
Vegetables should be eaten while they are young and tender; they taste better, and many of them have more protective food value then than they ＿＿＿＿＿＿＿＿ when they get too mature.
A.are
B.is
C.do
D.does
参考答案：
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