（7分）⑴用18mol/L浓硫酸配制100mL 1.0mol/L的稀硫酸，若实验_爱下问搜题

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问题填空题

（7分）⑴用18mol/L浓硫酸配制100mL 1.0mol/L的稀硫酸，若实验仪器有：

A．100mL量筒 B．玻璃棒　 C．托盘天平　 D．50mL容量瓶

E．10mL量筒　 F．胶头滴管　 G．50mL烧杯　 H．100mL容量瓶

实验时必须选用的仪器是（填入字母）

⑵在配制过程中，下列操作不正确的是

A．使用容量瓶前需检查它是否漏水

B．容量瓶用蒸馏水洗净后，一定要干燥后再使用

C．配制溶液时，用量筒量取试样后直接倒入容量瓶中，缓慢加入蒸馏水至刻度线

D．定容后盖好瓶塞，反复上下颠倒，摇匀

⑶若实验时遇到下列情况，将使所配溶液的浓度（填“偏高”、“偏低”或“无影响”）

A．定容时俯视读数 B．未将洗涤液转入容量瓶

C．洗涤量筒，并将洗涤液转入容量瓶

答案

（7分）（1）BEFGH（2分）（2）BC （2分）

（3）偏高偏低偏高（每空1分）

(1)所需浓硫酸的体积为18×V=0.1×1，得V=0.0056L=5.6ml，故需要用到10mL量筒、玻璃棒、烧杯、胶头滴管、100mL容量瓶

（2）A：正确

B：容量瓶没有必要干燥

C：硫酸必须在烧杯中溶解稀释冷却后再移液至容量瓶

D：正确

（3）A：加水偏少，所配溶液浓度偏高

B：未将洗涤液转入容量瓶，导致部分溶质未转移至容量瓶中，浓度偏低

C：量筒不必洗涤，否则溶质偏多，溶液浓度偏高

单项选择题

The head of the Library of Congress is to name Donald Hall, a writer whose deceptively simple language builds on images of the New England landscape, as the nation’s 14th poet laureate today.
Mr. Hall, a poet in the distinctive American tradition of Robert Frost, has also been a harsh critic of the religious right’s influence on government arts policy. And as a member of the advisory council of the National Endowment for the Arts during the administration of George H. W. Bush, he referred to those he thought were interfering with arts grants as "bullies and art bashers".
He will succeed Ted Kooser, the Nebraskan who has been the poet laureate since 2004.
The announcement of Mr. Hall’s appointment is to be made by James H. Billington, the Librarian of Congress. Mr. Billington said that he chose Mr. Hall because of "the sustained quality of his poetry, the reach and the variety of things he talks about." Like Mr. Kooser, Mr. Billington said, Mr. Hall "evokes a sense of place."
Mr. Hall, 77, lives in a white clapboard farmhouse in Wilmot, N. H. , that has been in his family for generations. He said in a telephone interview that he didn’t see the poet laureateship as a bully pulpit. "But it’s a pulpit anyway," he said. "If I see First Amendment violations, I will speak up."
Mr. Hall is an extremely productive writer who has published about 18 books of poetry, 20 books of prose and 12 children’s books. He has won many awards, including a national Book Critics Circle Award in 1989 for "The One Day," a collection.
In recent years much of his poetry has been preoccupied with the death of his wife, the poet Jane Kenyon, in 1995.
Robert Pinsky, who was poet laureate from 1997 to 2000 said he welcomed Mr. Hall’s appointment, especially in light of his previous outspokenness about politics and arts. "There is something nicely symbolic, and maybe surprising," Mr. Pinsky said, "that they have selected someone who has taken a stand for freedom."
The position carries an award of $35,000 and $5,000 travel allowance. It usually lasts a year, though poets are sometimes reappointed.

What is the best title for the passage

A．A Guard for Politics and Arts

B．A New Poet Laureate

C．A Representative for Freedom

D．The Winning of a Poet

单项选择题 A3/A4型题

女患者，32岁，结婚4年未避孕未孕，形体肥胖，月经40～60天一行，量少，面色白，头晕心悸，胸闷。苔白腻，脉滑。

其治法是：（）

A.滋阴养血，调冲益精

B.健脾补肾，调补冲任

C.疏肝解郁，养血理脾

D.燥湿化痰，理气调经

E.活血化瘀调经