针、阔叶材化学组成在含量上的差别：①木质素含量针叶材（）阔叶材；②纤维素含量针叶材≈阔叶材；③戊聚糖含量针叶材<阔叶材。
参考答案：>
When we got there, he was about to leave. So he only had time to explain _____ to us how he _____ our plan. [ ]
A. impatiently; like
B. repeatedly; thought about
C. carefully; thought of
D. roughly; found
在登记账簿过程中，每一账页的最后一行及下一页第一行都要办理转页手续，是为了 ( )。
A．便于查账
B．防止遗漏
C．防止隔页
D．保持记录的连续性
