2个月以下小婴儿化脓性脑膜炎最常见的病原体是（） A.水痘病毒 B.肺炎链球菌

城镇居民家庭恩格尔系数是（）。

A.食品支出总额与居民家庭总收入之比

B.食品支出总额与居民家庭人均纯收入之比

C.食品支出总额与家庭消费支出总额之比

D.居民家庭消费支出总额与总收入之比

一个滴水的水龙头一天要浪费35千克的水，如果这个水龙头像这样一直地下去的话，一年（按365天计算）将浪费多少千克的水？

下图表示有关物质（均是中学化学常见的物质）之间的转化关系（部分参加反应的水和生成的水未列出），其中B、C为金属单质，E为非金属单质，其余均为化合物，Y、Z的组成元素相同，D为淡黄色的固体、F为红褐色沉淀．回答下列问题：

（1）B与甲稀溶液不反应，但与甲的浓溶液在加热条件下能反应．则甲为______，C为______（填写化学式）．乙物质的电子式为______，A与B物质的量应满足的关系为______．

（2）反应②观察到溶液由无色变成蓝色，并且有无色气泡产生．请写出反应②发生的化学反应方程式______，产生气体的原因是______．

（3）写出反应③的离子反应方程式______．

（4）写出Z中阳离子的检验方法______．

以下关于腮腺良性肿瘤的诊断和治疗，哪项是错误的（）。

A.可采用“细针吸取活体组织检查”

B.术前行活体组织检查以明确诊断

C.术中可行冷冻活体组织检查以明确肿瘤性质

D.术中应保证面神经不受损伤

E.禁忌做简单的、顺包膜剥离的切除术

To produce the upheaval (激变) in the United States that changed and modernized the domain of higher education from the mid-1860s to the mid-1880s, three primary causes interacted. The (1) of a half-dozen leaders in education provided the personal force that was needed. (2) , an outcry (呐喊) for a fresher, more practical, and more advanced kind of instruction (3) among the alumni (校友) and friends of nearly all of the old colleges and grew into a movement that overrode (压倒) all (4) opposition. The aggressive "Young Yale" movement appeared, demanding partial alumni control, a more (5) spirit, and a broader course of study. The graduates of Harvard College simultaneously (6) to relieve the college’s poverty and demand new (7) . Education was pushing toward higher standards in the East by (8) off church leadership everywhere, and in the West by finding a wider range of studies and a new (9) of public duty.

The old-style classical education received its most crushing (10) in the citadel (城堡) of Harvard College, (11) Dr. Charles Eliot, a young captain of thirty-five, son of a former treasurer of Harvard, led the (12) forces. Five revolutionary advances were made during the first years of Dr. Eliot’s (13) They were the elevation and amplification of entrance requirements, the enlargement of the (14) and the development of the (15) system, the recognition of graduate study in the liberal arts, the raising of professional training in law, medicine, and engineering to a postgraduate level, and the fostering (培养) of greater (16) in student life. Standard of admission were sharply advanced in 1872—1877. (17) the appointment of a clean (院长) to take charge of student affairs, and a wise handling of (18) , the undergraduates were led to regard themselves more as young gentlemen and (19) as young animals. One new course of study after another was (20) —science, music, the history of the fine arts, advanced Spanish, political economy, physics and international law.

7（）

A.resource

B.orientation

C.reserve

D.enterprise