细胞是________、_________、_________的统一体，细胞的控

一个已经二十岁，身高不足一米的残疾乞丐躺在地上乞讨，将近一天时间所获无几，一个老外路过，送给他一张百元大钞。令人惊异的是，不到半分钟后，他一瘸一拐地参加了为一位身患重病却无力支付医疗费的女孩募捐的队伍，那队伍有200多人。 对这段话的理解概括最准确的是( )。

A．身残志不残，个矮情却长

B．奉献爱心，已蔚然成风

C．最缺少爱的人最懂得爱的温馨

D．爱是无价之宝

制定《环境影响评价法》的目的，是为了实施可持续发展战略，预防因规划和建设项目实施后对环境造成不良影响，促进（）。

A.经济和环境的协调发展

B.社会和环境协调发展

C.社会和经济正常发展

D.经济、社会和环境的协调发展

肠外营养的并发症有（）

A.气胸

B.肠源性感染

C.泌尿系统感染

D.肝功能损害

E.微量元素缺乏

阵发性室上性心动过速并发变异型心绞痛，应采用下述何种药物治疗（）

A.维拉帕米

B.利多卡因

C.普鲁卡因胺

D.奎尼丁

E.普萘洛尔

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.