槟榔的功效是（） A.驱虫消积 B.杀虫疗癣 C.行气解郁 D.杀虫 E.驱虫消积，

In the following passage, there are 20 blanks representing the words that are missing from the context. You are to put back in each of the blanks the missing worD．The time for this section is 20 minutes.
Many things about language are a mystery, and many will always remain so. But some things we do know.
First, we know that all human beings have a language of some sort. (1) is no race of men anywhere on earth so backward that it has (2) language, no set of speech sounds by which the people communicate with one (3) . Furthermore, in historical times, there has never been a race of men (4) a language.
Second, there is no such thing as a primitive language. There are many people (5) cultures are underdeveloped, who are, as we say, uncivilized, but the (6) they speak are not primitive. In all known languages we can see complexities (7) must have been tens of thousands of years in development.
This has not (8) been well understood; indeed, the direct contrary has often been stateD．Popular ideas (9) the language of the American Indians will illustrate. Many people have supposed that the Indians (10) in a very primitive system of noises. Study has proved this (11) be nonsense. There are, or were, hundreds of American Indian languages, and all of them (12) out to be very complicated and very old．They are certainly (13) from the languages that most of us are familiar with, but they are (14) more primitive that English and Greek.
A third thing we know about language (15) that all languages are perfectly adequate. That is, each one is a perfect (16) of expressing the culture of the people who speak the language.
Finally, we (17) that language changes. It is natural and normal for language to change; the (18) languages which do not change are the dead ones. This is easy to (19) if we look backward in time. Change goes in all aspects of language. (20) features change as do speech sounds, and changes in vocabulary are sometimes very extensive and may occur very rapidly. Vocabulary is the least stable part of any language.

双胎妊娠于分娩期不易发生（）。

A.产程延长

B.脐带脱垂

C.胎盘早剥

D.胎头交锁

E.产程进展顺利

税控发票开票系统中，关于历史数据导入功能的说法错误的是（）

A.可以导入老版本货运发票系统客户编码、商品编码、所有发票明细数据

B.可以导入老版本机动车发票系统客户编码、商品编码、所有发票数据

C.不可以导入老版本货运发票系统客户编码、商品编码、所有发票数据

D.只可以导入老版本货运发票系统客户编码、商品编码、所有发票数据

E.只可以导入老版本机动车发票系统客户编码、商品编码、所有发票数据

什么是管道疏水？

塔式起重机运动部分与建筑物及建筑物外围施工设施之间的最小距离不小于（）m

A.1

B.2

C.0.5

D.0.6