干燥后叶丝填充值应达到（）。
A、≥4.0
B、≥3.0
C、≥2.5
D、≥2.0
参考答案：A
—What do you think of this movie?
—It's well worth ______. I've seen it three times. [ ]
A. saw
B. seeing
C. looking
D. seen
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