正确答案: D

适于风力传播

题目：棉的种子外有细长的绒毛，具( )的作用。

解析：D

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举一反三的答案和解析：

[单选题]Excuse me, Marcia, a reporter from Vanity Fair ________ all day. Could you speak to her now?

has been phoning D． phoned

[单选题]56_______

Moreover

解析：副词Moreover（而且）类似与but also表递进含义，与前面句not just（only）呼应。副词However（然而，表转折关系）、Instead（作为替代、反而，表相反含义）、Therefore（因此，表原因）都不符题意。本题难度适中。

[单选题]Edward, you play so well. But I _________ you played the piano.

didn't know

[单选题]BWhen people hear a president speak, they seldom think about others helping to shape the presentation（报告）. Today, however, presidents depend on writers such as J. Terry Edmonds to help them communicate（交流）effectively. Edmonds is the first African American ever to work as a full-time speechwriter for a U.S. president; he is also the first African American to serve as director of speechwriting for the White House. His is an all-American story of success.

Edmonds graduated from Morgan State University in 1967.

[单选题]“17世纪末科学革命的胜利为启蒙运动奠定了基础”。这是因为

科学革命为启蒙运动奠定了理性主义思想基础

[单选题]棕榈科为重要的纤维植物，其纤维主要来自( )。

叶鞘

[单选题]现有等浓度的下列溶液：①醋酸，②苯酚，③苯酚钠，④碳酸，⑤碳酸钠，⑥碳酸氢钠。按溶液pH由小到大排列正确的是

①④②⑥③⑤ D． ①④②③⑥⑤

解析：

【解析】①②④均属于酸，其中醋酸最强，碳酸次之，苯酚最弱。③⑤⑥均属于强碱弱酸盐，根据越弱越水解的原理知，因H2CO3>苯酚>HCO3－ ，所以对应的盐，其碱性为：碳酸钠>苯酚钠>碳酸氢钠，pH顺序相反，故C项正确。

[单选题]（一）阅读下面的文言文，完成17—21题。（18分）（参考改编绍兴一中期末调研卷）汤中丞杂记

自明至今抚吴者谁比 抚：巡抚（官职）

解析：17、A（抚，动词，担任巡抚）（3分）