具有拟胆碱作用的驱虫药是（） A.使君子 B.苦楝皮 C.川楝子 D.槟榔 E.南瓜

Slavery Divides the Nation
Conflicting interests in north and south became increasingly apparent. Resenting the large profits obtained by northern businessmen from marketing the cotton crop, southerners attributed the backwardness of their section to northern expansion. Northerners, on the other hand, declared that slavery--the "peculiar institution" the south felt to be essential to its economy-- was wholly responsible for the region’s relative backwardness.

Why did southerners want to keep slavery
A. They could employ large numbers of slaves in cotton plantations.
B. They could only produce cotton.
C. The black people could go to the north to make money.
D. They could unite the southern states.

As far back as 1830s, sectional lines had been steadily hardening on the slavery question. In the north, abolitionist feeling grew more and more powerful, encouraged by a free-soil movement vigorously opposed to the extension of slavery into the regions not yet organized as states. To southerners of 1850, slavery was a condition for which they were no more responsible than for their English speech or their representative institutions. In some coastal areas, slavery by 1850 was well over 200 years old, an integral part of the basic economy of the region. In 15 southern and border states, the black population was approximately half as large as the white, while in the north it was an insignificant fraction.
From the middle 1840s, the slavery issue became more important than all else in American politics. The south, from the Atlantic to the Mississippi River and beyond, was a relatively compact political unit agreeing on all fundamental policies affecting cotton culture, using only primitive implements, was singularly adapted to the employment of slaves. It provided work nine months of the year and permitted the use of women and children as well as men.

治疗肝阳上亢所致眩晕证的最佳配穴是（）

A.肾俞、风池、行间、侠溪、肝俞

B.脾俞、肾俞、关元、足三里

C.中脘、内关、解溪、丰隆

D.百会、气海、曲泉、中脘、风池

E.神门、肾俞、太冲、足三里

(选做题)胚胎工程是一项综合性的动物繁育技术，可在畜牧业和制药业等领域发挥重要作用。下图是通过胚胎工程培育试管牛的过程。

(l)从良种母牛采集的卵母细胞，都需要进行体外培养，其目的是________________；从良种公牛采集的精子需___________后才能进行受精作用。

(2)在体外培养受精卵时，除了给予一定量的O₂以维持细胞呼吸外，还需要提供_____气体以维持__________。

(3)图中过程A称为________，它在胚胎工程中的意义在于__________________________。

(4)研制能够产生人类白细胞介素的牛乳腺生物反应器，需将目的基因导入牛受精卵，最常用的导入方法是___________；获得转基因母牛后，如果____________即说明目的基因已经表达。

在三个完全相同的杯子中，分别装有200g的水、煤油和盐水．比较它们液面的高度，其中液面最高的是　 [ ]

A． 水

B． 煤油

C． 盐水

D． 一样高

“万物的存在与否，全在人的感觉。一阵风吹过，有人感觉到冷，有人感觉到凉爽。难受与惬意，全在于人的感觉。”提出上述观点的思想家是（）

A.普罗泰戈拉

B.苏格拉底

C.伏尔泰

D.王阳明