题文
As we all know, improving one's reading ability _______ speed and comprehension.
| A．covers |
| B．contains |
| C．refers |
| D．involves |
推荐试卷
As we all know, improving one's reading ability _______ speed and comprehension.
| A．covers |
| B．contains |
| C．refers |
| D．involves |
试题篮
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