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问题 单项选择题

正常脑脊液的pH波动范围是

A．5.31～6.34

B．6.34～7.31

C．7.31～7.34

D．7.31～8.34

E．6.31～7.31

答案

参考答案：C

解析：正常脑脊液pH为7.31～7.34，且相对稳定。

单项选择题 共用题干题

女，42岁，月经量增多5年，痛经并进行性加重3年，G2P1。妇科检查：经产型外阴，宫颈光滑，子宫均匀性增大，如孕3月，活动度差，质韧，有压痛。

若B型超声提示：子宫增大，肌壁回声粗糙，右侧附件可及一直径6.5cm大小囊性肿物，CA125：50IU/L，该患者最佳手术方式为（）

A.次全子宫切除术

B.双附件切除术

C.全子宫切除术

D.全子宫+双附件切除术

E.全子宫+右侧附件切除术
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填空题



I am honored to be here today, (1) Harvard at this celebration of the College Board’s half century of working to promote (2) and equal opportunity in higher education.
Before I say anything else, I want to thank everyone in the room for the work you do every day to make college (3) , available, and (4) for millions of young people across the country.
I want to focus my remarks on a matter of (5) to American familiesand to the future of the nation -- restoring education to its proper role as a (6) to equal opportunity and (7) in our society.
This has been an (8) in higher education, with great and creative efforts made by many institutions. Earlier this year, we announced a new (9) at Harvard aimed at the students from families of low and (10) income. Under our new program, families with incomes of (11) will no longer be expected to contribute to the cost of attending Harvard for their children. Families with incomes of less than $ 60,000 will also see their (12) reduced.
We are proud of this effort at Harvard, but we are aware that the programs of individual institutions with means can never be a substitute for our shared (13) to provide adequate funding for Pell grants and other financial aid, and for the state and community college systems that make higher education (14) and affordable for the (15) .
There is something empty about (16) initiatives that may be right for one institution without attention to their broader impact. (17) , we (18) if we urge changes in national policy without doing what we can on our own campuses.
In this spirit, I want to (19) today a problem that is emerging with (20) in this nation.
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